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

C Interview Questions

Questions Answers Views Company eMail

What is c programming structure?

1122

Are the variables argc and argv are always local to main?

978

Can you please explain the difference between strcpy() and memcpy() function?

1023

What are c identifiers?

1052

What is define directive?

1088

Do you have any idea about the use of "auto" keyword?

1055

How many levels of pointers have?

1001

What are types of preprocessor in c?

1023

What is #error and use of it?

1212

Tell me is null always defined as 0(zero)?

1044

In which header file is the null macro defined?

1315

What is c preprocessor mean?

1256

What is file in c preprocessor?

1094

Do you know the difference between exit() and _exit() function in c?

1021

Should I use symbolic names like true and false for boolean constants, or plain 1 and 0?

1024

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Un-Answered Questions { C }

Explain modulus operator.

1007

How do I swap bytes?

1030

How do I get a null pointer in my programs?

1068

What is the maximum length of an identifier?

1145

What is the difference between malloc() and calloc() function in c language?

1039

What is the purpose of 'register' keyword?

1057

what are bit fields? What is the use of bit fields in a structure declaration?

2065

What is the auto keyword good for?

1081

What is meant by preprocessor in c?

962

What is pointers in c?

1073

What is linear search?

1093

What does the c in ctime mean?

1028

Array is an lvalue or not?

1076

Why does notstrcat(string, "!");Work?

1094

Are pointers really faster than arrays?

973

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