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 4733

Define function pointers?

1 3688

How do you initialize function pointers? Give an example?

3 5089

where can function pointers be used?

2 4469

what are bitwise shift operators?

4 7623

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

Flextronics, TISL, Virtusa,

2134

what is the size of an integer variable?

4 6497

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

3 5819

what is the little endian and big endian?

1 3989

what is the use of fflush() function?

2 6312

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

2 7437

where does malloc() function get the memory?

1 4135

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

1 4422

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

3 7955

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

2 5636

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Un-Answered Questions { C }

How many levels of pointers have?

1053

What is string concatenation in c?

1094

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

1068

Explain how can you tell whether two strings are the same?

1016

using only #include and #include Write a program in C that will read an input from the user and print it back to the user if it is a palindrome. The string ends when it encounters a whitespace. The input string is at most 30 characters. Assume the string has no spaces and distinguish between and lowercase. So madam is a palindrome, but MadAm is not a palindrome. Use scanf and %s to read the string. Sample Test: Enter a string: madam madam is a palindrome. Enter a string: 09023 09023 is not a palindrome.

1812

How do you write a program which produces its own source code as output?

1121

What is the code in while loop that returns the output of given code?

1995

What is volatile, register definition in C

1108

write a program in C that prompts the user for today's date,tomorrow's date and display the results.Use structures for today's date,tomorrow's date and an array to hold the days for each month of the year.

5461

List the difference between a "copy constructor" and a "assignment operator"?

1018

What are the advantages of the functions?

1162

What the different types of arrays in c?

1069

How old is c programming language?

1009

What is sizeof int?

1101

differentiate built-in functions and user – defined functions.

1088

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