C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C Interview Questions

Questions Answers Views Company eMail

What is the difference between a structure and a union?

2 869

How can you dynamically allocate memory in C?

2 839

What are macros in C?

2 677

What is a segmentation fault?

2 773

What is the use of the sizeof operator?

2 811

Explain the difference between fopen() and freopen().

2 790

What is the difference between calloc() and realloc()?

1 720

Explain #pragma in C.

1 627

What are dangling pointers?

1 640

What is undefined behavior?

1 663

What is the use of the restrict keyword?

1 597

What is an lvalue and an rvalue?

1 689

Can a program have multiple main() functions?

1 810

What is the output of printf("%d", printf("Hello"));?

1 729

Why is C called a middle-level language?

1 648

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Un-Answered Questions { C }

Hi can anyone tell what is a start up code?

2000

What are runtime error?

1078

What is the size of enum in bytes?

1036

Explain the difference between malloc() and calloc() function?

987

What does %p mean c?

1016

What are the storage classes in C?

1069

Write a program to swap two numbers without using a temporary variable?

1070

Explain what does it mean when a pointer is used in an if statement?

1004

How can I do graphics in c?

982

What's the total generic pointer type?

1010

Can you mix old-style and new-style function syntax?

1048

how to find anagram without using string functions using only loops in c programming

3134

The postoder traversal is 7,14,3,55,22,5,17 Then ur Inorder traversal is??? please help me on this

3505

What is the difference between constant pointer and constant variable?

1164

What is a macro?

1050

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