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?

2 836

How can you dynamically allocate memory in C?

2 763

What are macros in C?

2 627

What is a segmentation fault?

2 717

What is the use of the sizeof operator?

2 762

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

2 731

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

1 659

Explain #pragma in C.

1 592

What are dangling pointers?

1 596

What is undefined behavior?

1 621

What is the use of the restrict keyword?

1 560

What is an lvalue and an rvalue?

1 650

Can a program have multiple main() functions?

1 767

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

1 681

Why is C called a middle-level language?

1 596

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Un-Answered Questions { C }

What are derived data types in c?

987

Why double pointer is used in c?

957

What does typeof return in c?

988

Explain why C language is procedural?

1134

What is assignment operator?

970

What is conio h in c?

967

Write a program to input the price of 1 burger and the number of burgers eaten by a group of friends .print the total amount to be paid by the group?

960

When was c language developed?

1110

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

1042

if p is a string contained in a string?

1772

Is c weakly typed?

931

How do I swap bytes?

993

What is c token?

986

What is hash table in c?

944

Explain what’s a signal? Explain what do I use signals for?

1014

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