If you are preparing for the Python job interview and want to crack it in one go, then it is vital for you to go through the frequently asked and important questions. 

Based on insights from various IT companies and brands that hire Python developers, we have curated some of the most asked Python interview questions for freshers and experienced candidates. 

These questions will help you in getting a high-paying Python developer job or a smooth job switch with better opportunities.

You will get to know about the concepts that are very common and help you improve your coding knowledge of Python.

Go through these top-tier interview questions on Python programming and boost your self-confidence before you appear for an interview.

Introduction to Python Programming Language

Python programming language was developed and introduced by Guido van Rossum on 20 February 1991. It is one of the most used languages because of its applications in modern technologies like Data Science, Machine Learning, and Artificial Intelligence (AI).

It is a free-to-use and open-source language with an easy syntax. Also, Python is a general-purpose language based on the concept of object-oriented programming (OOP).

Python is a dynamic type of language with the feature of portability that has extensive support for libraries.

What is the Scope of Python Programming?

Python is considered the best option for developing games and programs efficiently. With support for multiple programs, Python is the preferred choice for all future technologies such as AI, ML, and data science.

It also has broad community support and has way better code readability. The Python developer interview questions mentioned in this comprehensive write-up will challenge your knowledge and improve your arsenal, which will land you in a great pool of opportunities.

Python has a very good future scope in various sectors:

• Desktop GUI application
• Console-based applications
• Game development
• Software development
• Audio and video applications
• Image processing applications
• Internet of things
• Machine learning
• Artificial intelligence

Things to Know While Preparing for Python Interview Questions and Answers

This article has top Python programming interview questions that will test your overall skills in Python, including the theory part, basics, and coding concepts.

You should stay ready for questions based on future technologies other than conventional Python questions. Read about AI and ML as the question based on them will be asked in the interview.

Basic Python Interview Questions for Freshers With Answers

If you are looking for a Python developer job as a fresher, here are some top and common Python basic interview questions that will land you a decent job.

Python is a highly comprehensive and object-oriented programming language. It uses keywords and not just punctuations. It has way fewer syntactic constructions than other programming languages.

Here are some of the interview questions on Python for freshers to check their knowledge and improve their skills. If you know the answers to these questions, there are better chances of you clearing the interview.

1. What is Python?

Python is a general-purpose computer programming language based on object-oriented programming. The programs in Python can run equally on every operating system. It is the primary language used in modern technologies like AI, data science, and ML.

2. Python was developed in which year?

It was developed in 1991.

3. What are the primary uses of Python?

Here is the list of some areas where Python programming language is used:

• Data Analysis
• Software testing
• Web development
• Software and application development
• Game development
• Automation and scripting
• Machine Learning
• Artificial Intelligence
• Data science and data visualization
• Desktop GUI
• Blockchain
• Image processing and graphic applications
• Creating operating systems
• Prototyping
• Everyday tasks like downloading audio and video files, updating the lists, converting files, filling information, renaming and arranging large batches, setting notifications, and many more.

4. Who uses Python?

Most of the big names in the industry are using Python language for their operations. Brands like IBM, NASA, Pixer, Facebook, Spotify, Intel, YouTube, Instagram, Pinterest, Reddit, etc., use Python as one of the primary languages.

5. What are the benefits of using Python?

Python has various benefits, and some of them are:

• Easy to read and write
• Interpreted language
• Vast library functions
• Portable across various operating systems
• Efficiency
• Presence of third party modules
• Various data analysis tools.
• Object-oriented programming base
• Open-source library
• Rich frameworks
• Testing instruments

6. How to write a program in Python?

Before writing a program in Python, there should be an interpreter like PyCharm installed on the system.

• Create a new project
• Select a location or storage space where files will be stored
• Click on the create button and select the new file
• Name the file
• Type a simple program
• Run the program from the run option in the Menu
• The output will be at the bottom of the screen

7. Where to run Python code?

You can run a Python code from the run option in the menu in an interpreter. A Python code can also run in command prompt code. It will run the program after entering the correct path of the file.

8. What is a function in Python with example?

A function in Python is a code block that runs when it is called in a program. Data can be passed into the function with the help of this, and it is known as a parameter. The function can also return data as results.

9. How many functions are there in Python?

There are basically three types of functions in Python:

– Built-in functions

These functions come defined with the Python language. Here are some of the built-in functions in Python:

• print() function
• len() function
• sum() function
• sorted() function
• dir() function
• max() function

– User-defined functions

These functions are defined by the user to perform a task in the program. These are defined with the def keyword at the start. These functions are written like this:

• def add_numbers()
• def entry()

– Anonymous functions

These are the functions that are defined without a name. Also called lambda functions, the anonymous functions are used when a user needs a function for a little time in function. It is written as— lambda()

10. Where is a Python function defined?

A function in Python is called with the help of the def keyword. A function block starts with this keyword, and then function name and parentheses(()) take place. Arguments are placed between this, and parameters can also be defined inside of this.

11. Is Python code compiled or interpreted?

Python code is interpreted. A Python code is converted into bytecode that is executed by a virtual machine in Python. A Python program is not needed to build like code for other languages where it is compiled, and it works on an interpreter only.

12. What is a dynamically typed language?

Type checking takes place at execution in a dynamically typed language. The variables are checked against types only when the code is executing. Programming languages like Python, JavaScript, PHP, Lisp, etc., come under this type.

The exact same variable can be used multiple times in a program in a dynamically typed language like Python.

13. What are Python literals?

The raw data that is assigned to constants and variables are defined as literals in Python. Basically, these are used to represent a fixed value in the source code. It can be either a string type, a numeric type, a boolean type, etc.

14. What is an Interpreted language?

When the implementation of the programs is done directly without compilation of the program into machine language, the language is called interpreted language. These languages are slower than the compiled languages.

All the debugging occurs at run time in this language. Python, JavaScript, Perl, etc., are some of the examples of interpreted languages.

15. What is Python virtualenv?

The isolated environment for development and debugging Python is called virtualenv. It runs multiple applications with the help of pip. You can also use it to isolate a Python interpreter with settings and libraries.

virtualenv is a tool that is used for storing copies of Python and pip that are installed from the projects. With the help of this, a user can work on multiple projects on the same machine at the exact same time.

16. What do you think of the future of Python?

Most future technologies are mostly dependent on Python, and that is what makes it one of the most used languages.

Python is very popular, and it is used as it is less complex than other languages. The future is of Artificial Intelligence (AI) and Machine Learning (ML). Because the majority of programming in ML and AI is done with Python, the future of the language contains more opportunities.

17. How to reverse a list in Python?

The function that is used to reverse a list in Python is list.reserve()

18. What is the role of map() function in Python?

The Python map() function processes and transforms the iterable like tuples and lists without using for loop.

19. What is a Try block in Python?

It is a block that is preceded with the help of the try keyword.

20. What is the shortest method to open a text file and display content?

Using the ‘with’ command is the shortest way to open a text file and display the content in it.

21. Can you write a Python program to add two integers that are greater than zero without using the plus operator?

Yes, I can do it with the help of a bitwise operator.

22. What will be the output of this program? A[2]=[1,3,4,5,8,9,11,56]

The indexing starts from zero, and the element at the second index is 4. The output will be 4.

23. What is the Python dictionary?

A dictionary in Python is a collection of items that are written in curly brackets with keys and values. The items are in no particular order and are used to retrieve the value for keys that are known.

24. Differentiate between new and override modifiers in Python.

If there are two methods with the exact same name to perform different tasks and provide different functionality, the concept of overriding is used. 

The new modifiers hide the original method, which provides different functionality. The original method can also be accessed by the base class.

25. What is pass in Python?

Pass is a statement in Python that is used as a placeholder for upcoming codes. At execution, it does not show any error, but it is not allowed in loops, class definitions, if statements, or function definitions.

Basically, it is a null statement, and when it is executed, it will result in no operation.

26. What is recursion in Python?

When the functions call themselves in a program, the process is known as recursion. It has two parts, the base case and the recursive case. 

The base case is used to stop the recursion, and the recursive base is where the function calls itself.

27. What are the basic applications of Python?

The basic applications of Python include:

• Web and web framework applications
• Image processing applications
• GUI based desktop applications
• Prototyping
• Game development
• Data processing

28. Tell me the names of some Python built-in modules?

• OS module
• Random module
• Sys module
• JSON
• Math module 
• Collective module

29. How does closure occur in Python?

When a nested function defines a value in an enclosing scope, the closure occurs in the program. It remembers the values.

30. Tell me something about SciPy.

All the numerical code is stored in SciPy. It contains a better version of the linear algebra modules with more features. There are more algebra modules in SciPy as well.

31. What is the enumerate() function in Python?

Enumerate() is a function that is used to iterate through a sequence. It keeps track of both elements and the index. It takes the collection and returns it as an enumerated object.

32. How does Python do Compile-time and Run-time code checking?

Python does not perform compile-time code checking except when the code is syntactically invalid. If the code is following the syntax rules, it will compile without even checking it.

Python run time code checking is done dynamically. All the parts of the program are checked at runtime.

33. What are the common built-in data types in Python?

• Binary type
• Boolean type
• Set type
• Mapping type
• Sequence type
• Numeric types
• Text type

34. What is the basic difference between .py and .pyc files?

.py files have the source code of a program, while the .pyc files have the bytecode of a Python program. Python compiles the .py files and saves them as .pyc files.

35. What are comments in Python? What are different types of comments?

Comments are text with the information in Python. These are used when two or more programmers are working on a project. The use of Python comments is to analyze, debug, and provide feedback. 

Comments are of two types:

• Single line comment
• Multiple line comment

36. What are global, private, and protected attributes in Python?

• Global variables are defined in the global scope. Global keyword is used for using it in global scope in a function.
• Private attributes have double underscores as prefixes to their identifiers. They can not be accessed from outside directly, which results in AttributeError.
• Protected attributes have an underscore as a prefix to their prefix. It can also be accessed from outside the class.

37. How to remove duplicate elements from a list in Python?

Duplicate elements can be removed from the list by turning them into the set. The set (list) function is used for it.

38. What is Python Tkinter?

Tkinter in Python is a library and toolkit for GUI development. It has attributes like dimensions, fonts, colors, etc. It also gives support for various GUI applications.

39. What is Pyramid in Python?

A Python pyramid is made for larger applications. We can select a database, URL structure, templating style, database, etc., with the help of a pyramid. It provides flexibility as it is a heavy configuration program.

40. Is tuple comprehension possible in Python?

No, it is not possible because it will end up in a generator instead of a tuple comprehension.

41. What is the work of # in Python?

It is used to comment out everything that comes after on the line in Python.

42. What is the minimum and maximum length of an identifier in Python?

Identifiers can be of any length. There are no limitations on length in Python.

43. What are modules and packages in Python?

A package holds sub-packages and modules, and the file __init__.py is used in the package for holding user-interpreted codes.

A module is a file that has Python code. It also modifies the code to get executed in run time. It consists of the unit namespace, which also has extracted variables.

The modules prevent collision between global variable names, and packages do the same between module names. The packages are also reusable, and that is why they are preferred.

44. What is Scope in Python?

In Python, the location where we can find a variable and can access it when it is required is called scope. This is of two types: global and local. 

Global variables are the ones that can be used by any part of the program and can be declared outside of any function.

Python Interview Questions for Experienced (2 to 4 Years)

If you are looking for advanced level Python coding interview questions, here are some of the most asked questions that will help you in a job interview as an experienced candidate.

Since more questions will be technical for experienced candidates but the strong basic knowledge is also tested in the interview.

These Python interview questions for 2 years experience as well as 3 and 4 years experienced pros will test the skills that you have acquired during your journey as a Python developer in the industry.

1. Which is the best Python code checker?

There are plenty of Python code checkers available that can be used to check the quality of code. Here are the top five Python code checkers:

• Autopep8
• pycodestyle
• Black
• Pylint
• Flake8

2. Where to write Python code in Windows?

To run the code in Python, a system should have an integrated development environment for Python. You can also use Python commands in the command prompt window in Windows OS and run Python codes.

3. Does Python have a switch-case statement?

No, Python does not have a switch case statement.

4. Are methods and constructors the same thing?

No, methods and constructors are not the same things. The constructor in Python is a block of code that initializes objects that are created newly while the method is used to perform an operation on the existing objects.

5. What is the purpose of the bytes() function?

The byte() function in Python converts a normal object to the immutable byte object of the given size and data. It can also create empty bytes objects of a particular size.

6. Where will you use while instead of for?

I will use while loop when—

• there is a need to read a file into a variable,
• the increment value is nonstandard, and
• asking for user input.

7. What is the common difference between xrange and range in Python?

The range() returns a list of integers, while the xrange() returns a generator object. A range() keeps the entire list of elements in memory, but xrange() only keeps one element at a time.

Arithmetic operations can be performed with the help of range() which is not possible with the help of xrange(). Also, xrange() is not supported in Python 3.

8. What is the use of help() and dir() functions?

Both the help() and dir() functions are used for efficient observation of the built-in function. The dir() is a powerful inbuilt function that returns a list of methods. The help() is used for correlative purposes. 

dir() also lists out all attributes, and the help() is used to reduce the complexity of the program.

9. What data type would you use if you want to store the first and last names of a cricket team?

I will use the dictionary in Python to store the data.

10. What are pickling and unpickling in Python?

Pickling is a process in Python by which the object structure is serialized. An object is changed into a byte stream in pickling.

Unpickling is a process in Python by which the original objects are retrieved from strings. It changes the byte stream into an object.

11. What is monkey patching in Python?

At run time, when a module or class is modified dynamically, it is known as money patching in Python.

12. What is *args?

It is a special syntax that is used in the function definition to pass variable arguments. The * symbol is used for variable-length arguments.

13. What is **kwargs?

It is a dictionary of the variable names and values. It is a special syntax used in the function definition to pass variable length arguments.

14. What modules are used in Python for sending mails?

Python has smtplib and email modules; we can import these modules into the created mail scripts and send mail by authenticating the user.

It also has a methodsmtp server port which requires two parameters to establish a connection.

15. What is GIL?

It is a mutex used for limiting access to objects in Python. GIL stands for Global Interpreter Lock, and it is used in thread synchronization to avoid deadlocks. It is very helpful in multitasking.

16. Tell me about metaclass and where it is used?

The metaclass is basically a class for a class in Python. It can specify certain behaviours which are common among multiple classes. One of the most common metaclasses in ABCMeta is used to create an abstract class.

17. How would you end a block in Python?

I will use a colon (:), which is used to represent the end of a block in Python.

18. You need to add elements in a Python program; would you rather use the append() or extend() function?

I will use the append() function for adding elements in Python. The extend() function in Python is used to concatenate lists.

19. I wrote a Python code on Windows and want to use the same code on Mac. Can I do that without making any changes to the code?

Yes, you can do that. If you have a Python environment on the Mac, you can run the same code. You can also use the same code on various other target platforms, including Linux.

20. Tell me about the use of self in Python?

Self is a parameter in Python which can be used to access the variable of the class. With this keyword, you can distinguish between instance attributes from local variables. Self is used to increase the readability of the code.

21. What is __init__ in Python?

The __init__ in Python is used to initialize attributes of an object and used within the class. It is a reserved method in Python that works on an object-oriented approach. It is called each and every time an object is created from classes.

22. What is the lambda function in Python?

In Python, a lambda is a small function that is anonymous. With the help of one expression, it can take so many arguments. It is used when a nameless function is needed for a short period of time.

23. What is docstring in Python?

Docstring in Python is string literals that appear in a program after the definition of functions, methods, modules, and classes. It describes the working of the function as well.

24. Explain how you can make a Python Script executable on Unix?

To make the Python script executable on UNIX, the user should put #!/usr/bin/env in the first line of the Python project. After that, execution permission is added using chmod. After this, execute the script from the command line.

25. How is memory managed in Python?

First of all, the memory allocator ensures the storage in the operating system; after checking the memory, the memory manager in Python delegates the required memory to object-specific allocators. 

Memory allocation in Python involves segmentation, sharing, preallocation, and caching. The interpreter performs the Python heap and manipulates object pointers to memory blocks. Later, the heap space is allocated by the memory manager with the help of the Python API function.

26. How can you concatenate two tuples in Python?

I will use the ‘+’ operator for concatenating multiple tuples. A tuple data type is immutable, and it can not be changed by accessing index elements. The sum() function can also be used to concatenate two tuples.

27. What is middleware?

It is a regular Python class that is related to the request life cycle of the Django framework.

28. Why do we prefer Django for security purposes?

Django can avoid clickjacking, SQL injections, and cross-site scripting.

29. Tell me about the timer method in Python.

It is a method in Python that is available with threading. It helps to bring the same functionality as Python time sleep.

30. What is the difference between the remove() function and del statement?

The remove() is an in-built method, while the del is a keyword. The purpose of both is the same, but the behaviour is different as remove() deletes the values from the list with the help of value.

The del deletes values from the list with the help of the index.

31. How to remove whitespaces from any particular string in Python?

The strip() method is an in-built function that is used to remove whitespace in Python. It trims a string by removing the whitespaces in the program.

If only the trailing or leading part of the program needs to be removed, istrip() and rstrip() functions are used.

32. What is a negative index in Python, and why are they used?

It is used to display the data from the end of the list in any code. Negative indexing can be done without using any other function.

Negative indexing is used to display data from the end of the list and reverse any string or number using other functions in Python.

The negative index starts where the array ends. The last value in negative indexing is considered the first value.

33. What are lists and tuples in Python? What is the key difference between these two?

Lists and tuples store one or more values in a specific order in a program. Lists and tuples are classes of data structures. The classes in the list are dynamic, whereas the tuple is static. The tuple is faster than the list in Python.

If we talk about the differences between the two, lists are mutable, and tuples are immutable. Tuple consumes less memory than a list and is more time-taking. The list is used for performing operations like deletion and insertion, but a tuple is used for accessing the elements.

34. Which function is used for converting a list to a string?

The .join function is used for converting a list of a string.

35. What are / and // operators in Python?

• The / is a division operator and returns the values in the quotient.
• The // is the floor division operator and is used to return the values of the quotient before the decimal. It only gives the value before the decimal values.

36. What are pandas in Python?

Pandas is an open-source library in Python. It supports data structure for data-based operations associated with data manipulation and analysis. It has rich sets of features that are used in data operations and algorithms.

37. How is an empty class created in python?

An empty class in Python can be created by using the pass command, which is a null statement. Pass command is used after the definition of a class object.

38. Tell me the difference between Django and Flask.

Django is a Python framework used for creating large applications, and Flask is a micro Python framework used for creating small applications. Django includes an ORM, while Flask does not require any external library.

39. How to generate random numbers in Python?

For generating random numbers, a random module is used. The method is defined as:

• import random
• random.random

This method returns the floating-point numbers. Functions like randrange(), uniform(), normalvariate() can also be used for generating random numbers.

40. Explain PYTHONPATH?

When a module is imported, PYTHONPATH is used. It is an environment variable that also checks the modules present in the directories.

41. Is Python lists better than NumPy? If yes, then how?

No, lists are not better than NumPy. Python NumPy array is used instead of the list because of less memory and fast and convenient processing.

42. Why do we use the finalize method in Python?

The finalize method is used for freeing up the resources that are unmanaged. It is very helpful in memory management tasks and clean-up before the implementation of the garbage collection method.

43. What is pandas groupby in Python?

It is a feature that is used to split and group any object in the project. It is used for grouping the data by classes and entities.

44. Does the assignment operator copy objects? If not, then how will you copy an object in Python?

The assignment operator does not copy objects, but it makes a binding between the target and the existing object. Copying the module is necessary for creating a copy of any object in Python. It can be done in two ways— shallow copy and deep copy.

45. Explain shallow copy and deep copy.

– Shallow copy

It is a bitwise copy of an object. Shallow copy creates exact copies of the values in original objects. It is a deep and faster copy, and stores references to various objects in the main memory.

– Deep copy

It copies all data from source to target object. In addition, the deep copy duplicates the objects by source. It is slightly slower than the shallow copy. The changes are only visible in the copied element.

46. If do while loop doesn’t end with a semicolon, will it still work?

Python does not support the do-while loop.

47. What is len() function in Python?

len() function is used for finding out the length of a string, an array, or a list. 

48. What is the full form of SVM, and where is it used?

SVM stands for Support Vector Machine. It is a machine learning model that is considered an algorithm for classification. 

Related Reading: 80+ C Programming Interview Questions and Answers For Freshers & Experienced Professionals

Advanced Python Interview Questions for 5 Years Experience 

If you possess experience of more than five years as a Python developer, it simply means that you know everything basic about Python programming.

For Python interview questions for experienced professionals, we have covered some advanced-level questions that will check your expertise in the field.

Here are some of the top and most asked Python technical interview questions that will help you in preparation for an interview.

1. Which is the best Python code to Java code converter?

Jython is mostly used for using Python codes on the Java platform. It is an open-source implementation of Python code integrated with Java.

The code is compiled to Java bytecode and runs on any Java virtual machine. It gives access to all the Java libraries.

2. What are some Python code best practices?

Here are some of the best Python code practices that a developer should follow:

• Creating a code repository for Python and implementing version control
• Creating readable documentation
• Following style guidelines in Python
• Fixing broken codes instantly
• Using virtual environments
• Using Python package indexes
• Writing easy and readable codes
• Using the correct data structures
• Using codes that are object-oriented

3. In Python 3 and later, what is the use of a nonlocal statement?

It is used to assign values to a variable in an outer scope. It causes listed identifiers to refer to the previous variable in the nearest enclosing scopes.

4. If you installed a module with the pip, but it doesn’t import in your IDLE, what are the possible reasons?

There can be two possible issues in this process:

1. If the system has Python 2. Since NumPy is installed for Python 3.6 and the latest versions, this will show an error.
2. Check if there is an issue with the configuration of the anaconda with IDLE. If the system is using default Python in place of anaconda, NumPy can not be installed.

5. What is os.walk() function in Python?

The os.walk() is a function that generates the file names in the directory tree. It is done by walking the tree either bottom-up or top-down. It yields a 3-tuple for each directory, which are dirpath, dirnames, and filenames.

6. How is staticmethod different from classmethod?

Both the methods are used to define a class method that is installed without instantiating the object in a class. The signature in both methods is different.

7. What is the use of the PYTHONSTARTUP environment variable in the Python program?

The PYTHONSTARTUP environment variable is used to specify the particular location of the path to a file in Python. It can also be used in setting colors and preloading modules. This script will run before the interpreter.

8. What is the use of the PYTHONCASEOK environment variable in the Python program?

It is used to find the first case-sensitive matches in the import statements. It is used to ignore all import statements while calling the interpreter in Python.

9. What is PEP 8, and tell me about its importance?

PEP 8 is a document that guides the users with best practices on a Python program. The document was written by Guido van Rossum, Barry Warsaw, and Nick Coghlan in 2001.

With the primary focus on improving the readability and consistency of Python code, Python Enhancement Proposal or PEP is also used for improving the design and style of a program. 

10. What are decorators in Python?

Decorators in Python are used to add functionality to a class or a function. It can change the behaviour of a class without permanent modification in it.

11. What is the dogpile effect? What would you do to prevent this effect?

When the cache expires, and the client requests multiple times for the website at the same time, the dogpile effect occurs.

I will use the semaphore lock to prevent this effect. Because when the value expires, it will acquire the lock and generate a new value.

12. What is multithreading in Python?

When several programs are running concurrently by invoking multiple threads, the process is called multithreading. The Thread class in Python is a predefined class. It is defined in the threading module.

It is a lightweight process. Several threads refer to the data space with the main thread and share information easily by communicating with each other. Threads can be used for calculating results while the main part of the program is running.

13. What is Python’s parameter passing mechanism?

Parameter passing can be done by two methods in Python:

1. Pass by reference: All the arguments are passed by reference in any function in Python. When the value of the parameter is changed within the function, the change can also be seen in the calling function.
2. Pass by value: When an argument in the program is passed to the function, only values pass to the function, leaving reference behind. It is not changeable and immutable.

14. How good is Python for data analysis?

Python is very good for data analysis. Processes like data mining, data processing, and data visualization are done easily with the help of Python.

15. Tell me about the use of frozenset in Python?

The frozenset is a collection of unique values in Python. It is an immutable collection that is made of distinct hashable objects. The values in the frozenset can not be changed, and methods from the set on the frozenset can’t be used and updated.

16. What are the differences between Python 2 and Python 3?

Python 2 is faster than Python 3. The print keyword is considered a statement in 2 and a function in 3. Strings are stored as ASCII as default in version 2, while UNICODE is in version 3 as default.

The xrange() function is used for iterations in Python 2, and the range() function is used to perform iterations in Python 3. Version 2 is used by the DevOps engineer, and version 3 is used in fields like data science and software engineering. 

The syntax is also easier in Python 3 than in Python 2. Many libraries in Python 2 are not forward compatible and are strictly used with Python 3.

When the division of integers is performed, version 2 of Python gives an integral value while version 3 provides floating type values.

Exceptions are enclosed in notations in Python 2 and enclosed in parentheses in Python 3. If variables are used in a for loop, the values change in Python 2 but never change in Python 3.

17. What is the execution time for else part of a try-except block?

The else part of the try-except block will execute when there is no exception in the program.

18. Is it possible to call the parent class without its instance creation?

Yes, it is possible by creating an object of the child class and calling the function of the parent class in the Python program with the help of the dot operator.

19. What are Python namespaces? Why are they used?

A namespace in Python is a system that has a unique name for every object. It is used to implement scope, and it is created when a function, package, or module is evaluated. Basically, It is used to organize codes into logical groups when there are multiple libraries.

20. How will you combine data frames in pandas?

The data frames in pandas can be combined with three methods:

• Concatenating dataframes by stacking the two of them vertically.
• Concatenating dataframes by stacking the two of them horizontally.
• Combining dataframes on a common column is called joining.

Python OOPS Interview Questions

Python is an OOPS based language, and this concept makes it easy for programmers to write codes in it. Here are some quality Python coding questions and answers to help you in an interview.

1. How is OOPS used in Python?

OOPS is a paradigm in Python that uses classes and objects. Coding is done with the help of real-world elements like class, data abstraction, polymorphism, inheritance, encapsulation, etc.

2. What is encapsulation in Python?

It is a concept in OOP that is used to wrap data and the methods that work on data within a single unit. This helps a Python program to restrict the variable that is used to prevent unnecessary modifications and changes to the data.

With encapsulation, the data can be changed by the method of the object. These methods are called private variables. A class is a good example of encapsulation in Python as it is used to encapsulate the data like variables and member functions.

3. What is inheritance in Python?

It is the capability of one class in the program that is used to inherit the properties from another class. The class that derives properties is called the child class or derived class, and the class from which the properties are derived is known as the parent class or base class.

4. Tell me about the types of inheritance?

Inheritance is of four types:

• Single inheritance
• Multilevel inheritance
• Multiple inheritances
• Hierarchical inheritance

5. What are the advantages of using inheritance in Python?

Here are some of the key advantages of using inheritance in a Python code:

• It provides the reusability of the code.
• It is used for showing real-time relationships.
• It allows additional features to a class in the code without any modification.
• It is transitive in nature.

6. What is data abstraction in Python?

Data abstraction is used for hiding the actual implementation of the Python program, and it is done by showing only the functionalities.

If a class has one abstract function, it is called an abstract class. Once the module is imported from the ABC (Abstraction Base Class) module, abstract methods can be created in a Python program.

7. What is polymorphism in Python?

It means to have multiple forms of any object in a Python program. A code can be used to determine and differentiate the program.

Python Code Interview Questions With Basic Programs & Examples You Must Practice

You must have read the theory from books or tutorials, but the main part of any development job program. Here are some of the commonly asked Python code examples for interview preparation that will help you in cracking a Python developer interview.

These programs will help you develop and check your real-time coding knowledge and skills. Working on these projects will also help you in holding a tighter grip on Python.

You can practice these projects in Python to get a stronghold on the language. It will help you in finding Python programming questions and answers in a better way.

1. Python code for printing HelloWorld
2. Python code to add two or more numbers
3. Python code to find factorial of a number
4. Python code to reverse a string
5. Python code for snake game
6. Python code for building a calculator
7. Python code for cracking a WiFi password
8. Python code to check prime number
9. Python code for Fibonacci series
10. Python code for sending WhatsApp messages

Also Read: 50+ JavaScript Interview Questions and Answers

130+ Python Interview Questions and Answers PDF (Free Download)

Here we have provided the best questions and answers related to the Python language. You can also download Python interview questions pdf free to prepare in offline mode on your device.

Prepare with these questions and get a high-paying job in Python programming.

What is included in this free Python Interview Questions PDF?

This Python interview questions PDF contains more than 130 questions and answers. These commonly and frequently asked questions asked by the employers will help you prepare for the interview.

This PDF has questions and answers for beginner-level Python developers, programmers with 2 to 4 years of experience, and programmers with more than five years in the industry.

This PDF also has questions based on basic programs in Python. You can also find the most advanced questions based on modern technologies.

Average Python Developer Salary

Python is one of the most widely used programming languages in the world. It offers higher salaries if a developer has a strong command of the language.

The average salary varies from country to country, but because of the high demand for Python developers, the salary is comparatively higher than other language developers.

The salary will also keep increasing with the time as Python is on the rise and most of the future technologies are fully reliant on Python.

What is Salary of Python Developer in India?

The average Python developer salary in India is around six lakhs. The fresher developer of Python makes around 3 to 5 lakhs INR per annum in India.

It keeps increasing with the expertise, and a Python developer salary in India per month with a strong command can reach up to a humongous 5 lakh INR.

What is Python Developer Salary in the US?

A Python developer in the USA makes from $50,000 to $1,50,000 per annum. It keeps increasing with the experience and command of the language.

What is the Average Python Developer Salary in Canada?

The salary of a fresher Python developer in Canada ranges from $60000 to $1,75,000 per annum. The experience and expertise can get you a better job with a huge amount.

Which Companies Are Hiring Python Developers in India?

Here are some of the top companies in India that are hiring Python developers. You can work with them as a fresher or as an experienced candidate and take your career to the next level.

• TCS
• Tech Mahindra
• Wipro
• HCL
• Infosys
• HP
• Mahiti Infotech
• Cognizant Technology Solutions
• Gale Technologies

Big international brands like Dropbox, McAfee, Instagram, Nokia, Dell, Uber, Netflix, Spotify, Google, Pinterest, etc., also use Python language or framework in development. They also hire Indian talent as per their experience.

India’s Best Python Course Online With Certificate & Placement

The demand and supply work in parallel. There are many courses available in the market as Python is the top skill one can have in modern times. You should find and choose the best course of Python in India with a certificate that is valid on the global level.

We are providing the best course in Python at a very reasonable price. You can find the best Python educators on our platform. The certificate is also valid worldwide, and you can also grab jobs overseas.

FAQs Related to Interview Questions for Python

You might have questions in your mind if you are preparing for an interview as a Python developer. Here are some of the frequently asked questions for Python interview:

The post 115+ Python Interview Questions and Answers for 2025 (With Free PDF) appeared first on WsCube Tech Blog.

Programs written in C language can be transferred to similar machines without the source code. This language can be used to control the low-level operations of a computer.

If you are aiming for a job in MNC, startup, or SMB (small and medium business), as a C language expert or C Programmer, it is crucial to crack the job interview. For this purpose, you must prepare for the most common interview questions for C programming.

Upskill Yourself With Live Training

In this comprehensive and detailed guide, we have covered the most asked C programming interview questions and answers for freshers and experienced. 

Introduction to C Programming

The first thing you must know is the definition of C programming. This interview Q&A will take you through the basics of C language to make you market-ready with questions that are frequently asked in an interview for C programming.

As mentioned above, C is a high-level programming language that is also called the mother language. It is the base language for many modern languages like C++, C#, Java, etc.

Many compilers, including JVMs and Kernels, are based on C language and follow the syntax used in the C. Many common and basic concepts like functions, arrays, and strings are used in various languages and also came from the C language.

What is the Scope of C Language in 2025?

Programmers with a strong command over C can control every operation on a computer. There are many programmers that are making huge money with C programming. The demand for C programmers is not declining anytime soon.

This language is widely used and used for creating network drivers, operating systems, etc. C language will always stay in demand as it is the mother language of many languages that are used lately.

There are several areas where only C is used for coding and it can not be replaced by another language.

• Operating system Kernel
• Core networking purposes like TCP/IP stack and datapath
• Network and device drivers
• Embedded systems

If you are looking for a career scope in C programming at the application level, it is continuously being replaced by new and modern languages. C, at the system level, is still used, and it is not slowing down in the near future.

C Programming Skills to Have

For building a career in the C language, you must have these skills:

• Understanding of platform and processor
• Understanding of hardware
• Knowledge of Kernel
• Operation systems
• Understanding of architecture of the computer
• Debugging skills

Things to Know While Preparing for C Interview Questions and Answers

Any development job requires coding knowledge of the C language. Most employers start with basic C programming questions in the interview.

Here you will get to know about the best C language interview questions and answers that will help you get a job very easily. You should know how to face technical questions and impress the employer.

In addition, you must stay prepared for the interview by looking at the most asked C interview questions and answers. Keep the demand of the employer in mind to crack the interview. 

Get to know what they need from you as a C programmer and prepare with questions according to that.

Learn Basics of C Programming for Interview

Dennis Ritchie of the USA is known as the founder of C language, as he developed it in the year 1972.

C has a very rich set of library functions, and it is a machine-independent language. It is the ideal choice for developing firmware or portable applications.

The C language is very useful for the internal architecture of a computer. It is very helpful in understanding the working of other programming languages.

Basic C Interview Questions and Answers for Freshers

C languages help in understanding the data types and variables. You will know how to write different pieces of code and get a high-quality programming job. 

Go through these top C language interview questions for freshers and get market-ready with your skillset in the programming language. In this detailed guide, let’s get started with the most asked and basic questions first to help you become ready to kickstart your career.

1. Who developed C Programming language?

A computer scientist named Dennis Ritchie from the USA developed the C programming language. He developed this with the help of his colleague Ken Thompson.

2. When was C language invented?

It was invented in 1972.

3. Why is C known as the mother language?

It is the mother of most of the JVMs and compilers. Most of the languages use functions from this language. It has concepts like arrays, functions, file handling, etc.

4. What do you understand by local and global variables in C?

Global variables are declared outside the function, and the scope of a variable is available till the end of the program. Local variables are declared inside the function, and the scope is available in these variables. 

The life of the local variable is created when the block is entered and ends on exit, but the life of a global variable exists until the execution of the program.

Local variables are stored in a stack unless specified, and the compiler decides the storage location of a variable in global ones. So, these are the differences between a local and global variable in C.

5. Why are functions used in C?

Functions in C language are used to avoid rewriting the code. They can be called multiple times from a program. 

With the help of functions, any program can be tracked easily. It also provides the concept of reusability. Furthermore, a user can also break the big task into smaller tasks with the assistance of C functions.

6. What are arrays in C programming?

It is a group of elements of similar sizes. The size of the array can also be changed after declaration. The array has a contiguous memory location, and it makes code optimized and easier.

Arrays in C are of two types:

• One-dimensional array
• Multidimensional array

7. What do you understand by dynamic memory allocation in C?

When memory is allocated at the run time in any program and can be increased at the time of execution, it is called dynamic memory allocation in C programming.

It is used in the linked list. At runtime, malloc() and calloc() are used. It is implemented with the help of data segments, and less memory is required for storage.

8. What is ANSI in C?

ANSI, or American National Standard Institute, is an organization that maintains computer languages, data safety, data encoding, etc.

9. What is token in C?

A token is an identifier that can be a keyword, constant, operator, a string literal, etc. It is also the smallest unit in a program in C.

10. Tell me about some top features of C language.

• C language follows a structured approach
• It is fast and extensible
• Memory management
• Efficiency

11. What is the role of printf and scanf in C programming?

printf() function in C is used to print the values of character, float, integers, and string values. Some specifiers are %d, %s, %c, %f used for printing the values.

scanf() function in C is used for getting input from the user for a program.

12. What is the use of static variables in C?

When a variable is declared as static, it is known as a static variable. It keeps the value between various function calls. These are used because the static variable in C is available throughout the program.

It initialized to zero and later updated to the needed value. It is used only one time so that the memory space can be utilized.

13. What is recursion in C programming?

When a function calls itself, the process is known as recursion, and the function is known as a recursive function. It has two functions, the winding phase, and the unwinding phase.

14. What is a pointer in C programming?

A variable that refers to the memory address of any value is called a pointer. It is used to optimize the program to run faster. Some memory is allocated to a variable and it holds the address number that is called the pointer variable.

15. What is a NULL pointer in C?

When a pointer is not used to refer to any address, it is called a NULL pointer. When we assign 0 to any pointer, it is called a NULL pointer.

16. What is the difference between formal and actual parameters in C?

The parameters sent from the main function to subdivided functions are called actual parameters. The parameters declared at subdivided functions are called formal parameters.

17. What is nested structure in C programming?

It is a structure that contains an element of another structure as its member. Basically, A nested structure is a structure within a structure. It is done the same way structure members are declared in a function.

18. How to declare a function in C?

A function in C can be declared as

return_type function_name(formal parameter list)
{
function_body;
}

19. What is the difference between call by value and call by reference in C?

Actual arguments remain safe and can not be changed in the call by value in C. The operators are not safe as they are performed on actual parameters.

In the call by value, actual segments are not passed, and a copy of the segment is sent, but in the call by reference, actual arguments are passed.

For call by value, separate memory locations are created, and for the call by reference, they share the same memory space.

Interview Questions for You to Prepare for Jobs

20. Can you write a program to generate random numbers in C?

Yes, I can generate random numbers in C with the help of the rand() function. Here is how:

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
void main()
{
printf(“The number is: %d”, rand());
printf(“\n The number is: %d”, rand());
printf(“\n The number is: %d”, rand());
getch();
}

The output will be:

The number is: 455
The number is: 15648
The number is: 23212

21. What is an arrow operator in C programming?

The arrow operator in C is used to access the data member of a union and declared as a pointer variable. It is expressed as -> in C language.

22. What are storage class specifiers in C?

Storage class specifiers in C are extern, static, register, and auto.

23. What is typecasting in C?

When one data type is converted into another data type, the process is known as typecasting.

24. The local and global variables in C have the same name. Is it possible to access a global variable from a block with local variables?

Local variables are preferred, and it is not possible to access them in global variables.

25. What do you understand by enumerations in C?

An enumeration in C is a user-defined data type widely known as an enum. It has constant integers and integrals, which have names assigned by the user. It is used when a user needs a variable with a set of values.

26. What is union in C program?

Union in C programming is a data type that is user-defined that allows many types of data in a single unit. This data type holds the memory of the largest member, and it does not use the sum of the memory of all functions.

In this, we can access one variable at a time as it allocates one common space for all members of a union.

27. What is the use of the symbol ‘==’?

It is a relational operator that is used to compare two variables or values in a program. It is called equal to or equivalent to.

28. What is ternary operator in C?

The conditional operator is known as the conditional operator in the C language. It is denoted as (?:).

29. What is a preprocessor in C?

The C preprocessor is a software program that is used to process a source file before compilation. Header files, conditional compilation, line control, macro expansion, etc. can be included in a preprocessor.

30. Which operator is used in C to continue the program in the next line?

The backward slash(/) is used for this.

31. What is the difference between lvalue and rvalue in C?

The expression that is present on the right side of the assignment operator is known as the rvalue. It is assigned to lvalue which is on the left side of the assignment operator. 

The lvalue represents a variable and not a constant.

32. What do you understand by FIFO in C?

The data is stored in FIFO format in C language. The queue works on First-In-First-Out. The first data stored will be the first one to be accessed in a program.

33. How many spaces are there in a tab in C?

A tab in C programming has eight spaces.

34. Tell me about the if-else statement in C?

The if-else statement in C programming works as a control flow statement. it is followed by an optional else statement in C language.

35. Do you know about static memory allocation in C? Explain what it is.

The memory that is allocated during the time of compilation is called static memory allocation. It is implemented using heap or stacks.

This type of memory can not be executed with the program. The lifespan of a static memory is the lifetime of a program. It is used by the array in C.

36. Tell me about variables in C programming and how these are different from constants?

Variables are identifiers that are made of one or more characters and hold a particular value. The values that are held by variables can be changed in a program. 

The values given to constants are not changeable and can only be assigned once, mostly at the start of the program.

37. What is the use of && operator in a C program?

This is the AND operator in the C program. There is a situation for using this operator where all the conditions are true. When only one statement is false, it will return false as a result.

38. Explain run-time errors in C language?

When there is a run-time error in a program, the execution of a program is paused, and it is called the run-time error. It will show which part of the program caused the error.

39. How to view the path in C?

The C compiler has a function called getenv() that is used to retrieve the environment variable. It returns the pointer to an environment string on success. When the function variable can not find environment variables, it returns NULL.

40. When a pointer points to a variable in C, what is it contained in?

The variable will contain the address of another value or memory.

41. What is the difference between a free-standing and hosted environment?

Embedded systems don’t have any sort of file system or operating system and the ANSI standards call these environments a free-standing environment. When a program is running on a system, it is called a hosted environment.

42. How would you free a block of memory that has been allocated in a program?

Memory allocated in a program can be released by the free() function. The alternate method is when the pointer is holding a memory address which is realloc(ptr,0).

43. Can you declare static variables in header files in C language?

C programs can not declare a static variable without defining it. Static variables in a program can be defined in a header file, but it will result in causing every source file to have a different copy of a variable.

44. Can you write a C program to check even or odd numbers without using any arithmetic operator?

Yes, this can be done. Here is the program:

#include<stdio.h>
int main()
{
int i;
printf(“Enter a number: ”);
scanf(“%d”, &i);
if((number &1)==0)
printf(“%d is even”, i);
else
printf(“%d is odd”, i)
getch();
}

A bitwise AND operator can also be used to check if the number is even or odd.

Advanced C Programming Interview Questions and Answers for Experienced

If you are working in the industry as a C Programmer and want a job upgrade that tests your skills as a developer, you should possess some advanced skills.

Here are some of the most asked common C interview questions for experienced professionals that will help you understand the concept and get a smooth switch to high-paying jobs.

1. What is the difference between calloc() and malloc() in C programming?

Both calloc() and malloc() are used for allocating memory functions.  The only difference is that calloc() loads the memory location, but malloc() will not.

2. Can you execute a C program without using the main() function?

For the execution of a C program, the main() function is needed. Without this function, the program will be compiled but can not be executed.

3. What is a preprocessor in the C programming language?

It is considered a predefined function in a C program. It is used as a directive to the compiler and executed before the execution of a program.

4. Tell me the difference between interpreter and compiler in C.

A compiler translates the code into the machine code and it is used in C language. The interpreter is used in other high-level languages to compile code in line by line method.

5. What is auto keyword in C?

The local variable of a function is known as the auto variable or automatic variable. These are declared inside a block. It allocates memory with the entry and releases the used memory when the program is ended. When there is no value in the local variable, then it has a garbage value.

6. What do you understand by dangling pointers in C?

When a pointer is assigned to a memory location, but another program erases the memory used by the first pointer, and the first pointer is still using the same location, it is called a dangling pointer.

It is a pointer that stores the memory address of variables. It is used to point to the variable memory location that is released in a program.

7. What do you understand by the concatenation operator in C?

The concatenation operator is used to combine or concatenate two strings into one string. It is used in C macros.

8. Is the working of the exit() and return the same?

No, the working of the exit() function and return is not the same. The exit() is used to exit the program and return control to the OS. The return statements return from a function and return control to the calling function. 

9. Can we use the continue statement without the help of loops?

No, we can not use a continue statement without loops in C. it can only be used when in a loop. Otherwise, it will show a compile-time error.

10. How to check whether a symbol is defined or not?

The #ifdef and #ifndef preprocessor directives are used to check if the symbol is defined or not.

11. I have a value of 42532. Can I use int datatype to store this value?

No, you can not store this value. The integer data type can only support values from -32768 to 32767. You can use float or long int for that.

12. What is spaghetti programming?

It refers to the codes that are overlapped as the program progresses. This is an unstructured approach that needs to be avoided as it makes the program more complex.

13. What is a huge pointer in C?

It is a 32-bit pointer accessed outside of a segment. Huge pointers can be modified, which is not possible in far pointers.

14. What is getch() and getche()?

These functions are used to read characters from the input.

• getch() reads characters from the input device without using a buffer, and data is not displayed on the output display.
• getche() reads the characters from the input device but uses a buffer, and data is displayed on the screen.

15. What is the toupper() function in C?

It is a function used to convert lowercase characters into upper case.

16. What is the difference between ‘a’ and “a” in C language?

A double-quoted variable is called a string in C, but a single-quoted variable is known as an identifier in C. A string variable ends with a null terminator, which makes a two-character array.

17. What do you understand by #pragma directives in C?

It is a preprocessor directive used to turn on or off features in a C program. It has two types #pragma startup, which is used to specify functions at the start of a program, and #pragma exit, which is used to specify functions called on the exit of the program.

18. What is a bubble sort in C algorithm?

It is an algorithm that steps through a list and compares elements, and swaps them to make them in order. This process is repeated frequently until the list is sorted.

19. What is the difference between while(1) and while(0)?

• while(0) is the condition of the while loop, which means the condition is false, and the code won’t execute any further. 

• while(1) executes the infinite code times in a program.

20. You need to use unconditional branching; what keyword will you use?

I will use the goto keyword to perform unconditional branching in a C program.

Must Read: Top 7 Front-End Development Languages

C Technical Interview Questions and Answers

The technical round is the main phase of any development job. You should know about the C coding round interview questions. It has some programming questions based on common functions in C, and you should know about them precisely before applying for a technical job.

Get yourself ready by reading more books with technical knowledge and practicing more programs. Working on more programs will deepen your knowledge about C. Good command of the C language can land you in a pool of jobs with advanced technologies like Machine Learning, Artificial Intelligence, Robotics, etc.

Here are some of the tough C interview questions that will help you excel in your skills and get you the job you want.

1. Can you create a customized head file?

Yes, I can create a header file with function prototypes that are used in a program. These files are used after the #include.

2. What is a far pointer in C?

The type of pointer that can access all 16 segments of RAM is called a far pointer. It is a 32-bit pointer that uses information outside of memory.

3. Is it possible to create header files? If yes, then can you create them?

Yes, it is possible to create header files as per the requirement. It is done by including the function prototypes in the C program. #include directive is used by the name of a header file in C.

4. How to swap two numbers in a C program without the help of any other variable?

It can be basically done with two methods.

• With the help of arithmetic operators
• With the help of bitwise XOR

Here is how it is done with arithmetic operators:

#include<stdio.h>
int main()
{
int a=5, b=15;
print(“values before swapping: a=%d b=%d”, a,b);
a=a+b;
b=a-b;
a=a-b;
printf(\n Values after swapping a=%d b=%d, a,b);
return0;
}

Output:

Values before swapping: a=5 b=15
Values before swapping: a=15 b=5

5. How to print a string with the % symbol in a C program?

%% is used to print a string with a % symbol.

printf(“The total marks obtained %%d”);

6. What is a memory leak in C?

It is a condition where dynamic memory is allocated to the program but the used memory is not deleted or released. It is harmful to a program.

7. What is the output of this program?

#include<stdio.h>
main()
{
char*x=”xyz”;
x[2]=’a’;
printf(“%z”, *x);
}

This program will not run and crash because the program is trying to change the values throughout the program. The pointer indicates a constant string which is the reason for the crash.

8. Which statement is more efficient between x=x+1 and x++?

x++ is more efficient in a program as it gives just a single instruction to the compiler.

9. Can you print “Hello World” in C without using a semicolon?

Yes, I can print Hello World without a semicolon. It can be done with three methods.

• if statement
• switch statement
• while loop

Here is how I will do it:

#include<stdio.h>
int main()
{
if(printf(“Hello World”))
{}
return0;
}

10. Why can variable names not start with underscores?

Identifier names with two underscores are used by the compiler or standard library functions when they appear in a program. All identifier names started with an underscore are reserved in the file scope.

When a reserved identifier is used, the program will not compile. It is best to avoid using variable names with underscores at the start.

Download C Programming Interview Questions and Answers PDF (Free)!

You can download the C interview question PDF free from here and get yourself ready for the interview. This PDF has both questions and answers that can be very helpful before you appear for an interview. 

Basic C Programs for Interview Preparation

Here are some of the common and basic C programs asked in interview that you must know about. These programs are the foundation of the programming in C as it helps in building the basics of the language.

1. C program to print Hello World

#include<stdio.h>
int main()
{
printf(“Hello World!”)
}

Output:

Hello World

2. C program to add two integers

#include<stdio.h>
int main()
{
int a, b, sum;
print(“Enter two integers: ”);
scanf(“%d %d”, &a, &b”);
sum=a+b;
printf(“%d+%d=%d”, a,b,sum);
return0;
}

Output:

Enter two integers: 5

12

5+12=17

3. C program to print ASCII value

#include<stdio.h>
int main()
{
char c;
printf(“Enter a character: ”);;
scanf(“%c”, &c);
printf(“ASCII value of %c=%d”, c,c);
return0;
}

Output:

Enter a character: G

ASCII value of G: 71

4. C program to find even or odd numbers

#include<stdio.h>
int main()
{
int num;
printf(“Enter a number: ”);
scanf(“%d”, &num);
if(num%2==0)
printf(“%d is even”, num);
else
printf(“%d is odd”, num);
return0;
}

Output:

Enter a number: 5

5 is odd.

5. C program to get the length of a string

#include<stdio.h>
int main()
char s[] = “WsCube Tech”;
int a;
for(a=0; s[a]!= ‘\0’; ++a);
printf(“Length of the string: %d”, a);
return0;
}

Output:

Length of the string: 11

6. C program to reverse an integer

#include<stdio.h>
int main()
{
int a, reverse=0, remainder;
printf(“Enter an integer: ”);
scanf(“%d”, &n);
while(n!=0)
{
remainder=n%10;
reverse=reverse*10+remainder;
n/=10;
}
printf(Reversed value: %d, reverse);
return0;
}

Output:

Enter an integer: 2598 

Reversed value: 8952

Jobs for C Programmers (Top Companies Hiring)

There are many companies that are hiring C programmers. Here are some of the best jobs with C programming in the big companies that can make your career. C is one of the top-ranked programming languages in the world. A high number of companies use it to write embedded codes.

Scope in C is not coming down anytime soon. It is because C programming helps in system analysis and project management.

Software that is developed with the help of C language is used to control the flow of data and store it for further operations. The new generation technologies like AI and ML also require knowledge of the C language.

C language also has its applications in fields like network drivers, databases, compilers, operating systems, etc. are made in C language. It is helpful in understanding the variables and data types.

There are plenty of companies that are hiring C programming experts. Here are the top companies hiring C developers at a good annual package.

• Accenture
• KPIT
• GS lab
• Marvell semiconductors
• Emerson
• Atos
• Sunguard
• Zte
• IBM
• Dell International
• ISRO
• TCS
• Infosys
• Tech Mahindra
• Wipro
• Capgemini
• Ericson
• Nvidia
• Bosch

These companies are hiring C engineers, freshers, and experienced regularly and you can get a quality job at a decent package in these big brands and government agencies.

C Programming Jobs Salary in India

Apart from technical jobs in the development sector, a C programmer has a ton of opportunities in India. They can work as a teacher and can grab government jobs in teaching and other sectors. 

The demand in the development sector is not slowing down as all the emerging technologies also require a strong knowledge of coding in C. A developer can work as a:

• Junior Programmer
• Senior C Programmer
• Quality Analyst
• Software Developer
• Programming Architect
• Government Sector employee
• As a Teacher

C programmer salary in India can vary from INR 2 Lakhs to INR 15 Lakhs. The average salary of a C programmer is around INR 5 to 6 Lakhs in the country.

How to Learn C Programming Online?

The internet has changed the way technology can reach more hands. With plenty of courses available online, you can purchase the course from the best online coaching institute in the C language.

We are the primary name that provides a C programming course online with certificate which has significant importance and possesses value globally.

FAQs Related to Interview Questions for C Programming

Conclusion

The C language is not limited to a few programs. It requires a constant learning approach and creativity to excel in the field. With C being one of the easiest languages, it is also one of the never going-out-of-demand jobs.

Technical knowledge is very necessary for C language as you can control the flow of the program to restore or retrieve the data. You can learn top-quality development jobs in C without any essential educational qualification.

Machine Learning and Artificial Intelligence will be in-demand jobs in the future and C developers will be needed for future technologies. Prepare for the interview with the best questions and answers and get your dream job in C development.

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