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?

1078

What should malloc() do?

1172

How do I round numbers?

1012

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

1022

How can I change their mode to binary?

1119

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

1220

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

1044

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

1179

What is a pointer variable in c language?

1106

How can I do peek and poke in c?

1080

Did c have any year 2000 problems?

1112

What is the correct declaration of main?

1213

Post New C Questions

Un-Answered Questions { C }

How can I prevent another program from modifying part of a file that I am modifying?

1061

Write a simple code fragment that will check if a number is positive or negative.

1155

What are pointers? Why are they used?

1183

Is array name a pointer?

1030

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

1081

Explain with the aid of an example why arrays of structures don’t provide an efficient representation when it comes to adding and deleting records internal to the array.

3153

What is meant by keywords in c?

1070

Why structure is used in c?

1191

c program for searching a student details among 10 student details

2093

What does emoji p mean?

1120

Explain what are preprocessor directives?

1067

What is the maximum no. of arguments that can be given in a command line in C.?

1154

What is a built-in function in C?

1606

Which is better between malloc and calloc?

1204

List the difference between a While & Do While loops?

1102

For More Un-Answered { C } Questions Click Here