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

C Interview Questions

Questions Answers Views Company eMail

what does ‘Bus Error’ mean?

ABC,

1 4814

Define function pointers?

1 3765

How do you initialize function pointers? Give an example?

3 5216

where can function pointers be used?

2 4579

what are bitwise shift operators?

4 7803

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

Flextronics, TISL, Virtusa,

2202

what is the size of an integer variable?

4 6660

what are the files which are automatically opened when a c file is executed?

3 5950

what is the little endian and big endian?

1 4072

what is the use of fflush() function?

2 6410

what is the difference between exit() and _exit() functions?

2 7592

where does malloc() function get the memory?

1 4204

what is the difference between malloc() and calloc() function?

1 4490

what is the difference between postfix and prefix unary increment operators?

3 8090

what is the difference between strcpy() and memcpy() function?

2 5746

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Un-Answered Questions { C }

Explain about block scope in c?

1148

which is conditional construct a) if statement b) switch statement c) while/for d) goto

1268

write a program which the o/p should b in such a way that s triangle if I/p is 3,a Square/rectangle if I/P=4,a pentagon if I/P=5 and so on...forget about the I/P which is less than 3

2122

What is a stream in c programming?

1232

How can I call system when parameters (filenames, etc.) Of the executed command arent known until run time?

1158

Explain what is the difference between the expression '++a' and 'a++'?

1265

What are the different categories of functions in c?

1179

What is Dynamic memory allocation in C? Name the dynamic allocation functions.

1481

write a program to display all prime numbers

2021

In which header file is the null macro defined?

1402

Explain what is the heap?

1102

WRITE A CODE IN C TO SEARCH A FILE FROM NOTEPAD FILE.

2498

What is a void pointer? When is a void pointer used?

1107

What is a const pointer in c?

1179

how many types of operators are include in c language a) 4 b) 6 c) 8 d) 12

1135

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