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?

2 936

How can you dynamically allocate memory in C?

2 873

What are macros in C?

2 702

What is a segmentation fault?

2 793

What is the use of the sizeof operator?

2 847

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

2 827

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

1 751

Explain #pragma in C.

1 645

What are dangling pointers?

1 653

What is undefined behavior?

1 680

What is the use of the restrict keyword?

1 616

What is an lvalue and an rvalue?

1 712

Can a program have multiple main() functions?

1 826

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

1 753

Why is C called a middle-level language?

1 665

Post New C Questions

Un-Answered Questions { C }

Was 2000 a leap year?

1009

How pointers are declared?

921

Explain what is the stack?

1053

Can static variables be declared in a header file?

1027

Explain Function Pointer?

1113

Explain how do you determine the length of a string value that was stored in a variable?

1111

Why do some versions of toupper act strangely if given an upper-case letter?

1050

What is printf () in c?

1025

Can I use base-2 constants (something like 0b101010)? Is there a printf format for binary?

971

Write a C program on Centralized OLTP, Decentralized OLTP using locking mechanism, Semaphore using locking mechanism, Shared memory, message queues, channel of communication, sockets and a simple program on Saving bank application program using OLTP in IPC?

2640

Explain how do you determine whether to use a stream function or a low-level function?

1042

Is the exit() function same as the return statement? Explain.

1050

Write programs for String Reversal & Palindrome check

1020

Explain 'bit masking'?

1037

Explain argument and its types.

1011

For More Un-Answered { C } Questions Click Here