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

C Interview Questions

Questions Answers Views Company eMail

How can I swap two values without using a temporary?

1110

How do I send escape sequences to control a terminal or other device?

1076

What should malloc() do?

1170

How do I round numbers?

1010

Here is a neat trick for checking whether two strings are equal

1021

How can I change their mode to binary?

1117

If null and 0 are equivalent as null pointer constants, which should I use?

1219

How do I create a directory? How do I remove a directory (and its contents)?

1172

How can a process change an environment variable in its caller?

1190

I have seen function declarations that look like this

1043

How can I find out the size of a file, prior to reading it in?

1175

What is a pointer variable in c language?

1103

How can I do peek and poke in c?

1078

Did c have any year 2000 problems?

1112

What is the correct declaration of main?

1211

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Un-Answered Questions { C }

What are the types of type qualifiers in c?

1089

What is meant by type specifiers?

1129

If the size of int data type is two bytes, what is the range of signed int data type?

1024

Why pointers are used?

1076

Explain the difference between strcpy() and memcpy() function?

1003

How does free() know explain how much memory to release?

1052

in programming languages a statement or part of a statement that specifies several different execution sequences a) constructs b) distructs c) executes d) none

1102

What is wrong with this declaration?

1109

Write a program to reverse a string.

1078

What does do in c?

1047

Why do we use static in c?

1132

Is it cc or c in a letter?

1023

Write a program to swap two numbers without using the third variable?

1069

What are global variables and how do you declare them?

1101

Can you define which header file to include at compile time?

1022

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