Top 50 C Programming Interview Questions for 2024 - 24

Top 50 C programming interview question

What are the compilation stages and it's commands in c.

What are the types of errors are occurred in C?

What is code-optimization? What are advantages of code-optimization?

Write a one line code to compare the two integer numbers using bitwise operator.

Write a program that converts Lower to Upper and Upper to Lower characters using bitwise.

What is typecasting? What are the types of typecasting? Explain with example.

What is the format specifier to use for printing address?  Ans : “%p”

What are the ristrictions of switch cases? (What you should not use for switch cases).

Write a program to satisfy the if and else conditions.  using goto

Write a program to swap two integers using bitwise operators.

What are minimum no.of iterations for while loop?  Ans : 0

What is a volatile keyword?

What are the differences between Arrays & Pointers?

What is the sizeof char * (Character pointer).

What is Array of pointer? Give one example.

What is Pointer to an array? Give one example.

What is the difference between Array of pointer and Pointer to Array?

What is Function? What are the advantages?

What is the difference between Call by Value & Call by reference?

What is Function Pointer? What is the advantage of Function Pointer?

What is command-line arguments? What is the use of that?

By default Command line Arguments are treated as ????

What are the Storage Classes in c ?

What is the default storage class for local variables and global variables?

What is a memory leak?

Can we declare the register variable as global?

Can we access the addresses of registers?

What is a static function?

What is the default storage class for any function?

What is the recursion function? What are the advantages and disadvantages?

What is the difference between malloc & calloc?

What is the return type of malloc function?

What is the use of realloc function.

Write a program to allocate memory dynamically without using malloc and calloc functions.

Write a program to free the dynamic memory allocation without using free() function.

What is a memory leak?

What is a dangling pointer? How to avoid the dangling pointer?

What is structure? What are differences between Arrays and Structures?

What is structure padding? How to avoid structure padding?

Write a program to find the sizeof structure without using sizeof operator?

When the memory is created to the structure?

What are the return values of strcmp function?

Write a one-line code to copy the string into the destination.

What are the types of qualifiers?  

What is self referential structure pointer?

 What is enum? What are the advantages?

 What is typedef? What are the advantages?

 What is FILE in C? What is the size of that?

 What is a union? What are the advantages?

 What are differences between Structure and Union?

 What are the differences between macros and functions?

 What is the difference between #define and typedef?

 What are the default file pointers of  a program?

 What is the difference between strcpy and memcpy?

 What does Header file and Libraries contains?

 

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