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

C Interview Questions

Questions Answers Views Company eMail

Write programs for String Reversal & Palindrome check

TISL,

1013

What are register variables? What are the advantage of using register variables?

TISL,

1132

Where are the auto variables stored?

TISL,

1093

How will you declare an array of three function pointers where each function receives two ints and returns a float?

TISL,

1295

When reallocating memory if any other pointers point into the same piece of memory do you have to readjust these other pointers or do they get readjusted automatically?

TISL,

1212

How would you obtain the current time and difference between two times?

TISL,

1239

Are bit fields portable?

EXL,

1110

How are Structure passing and returning implemented by the complier?

TISL,

1109

What the advantages of using Unions?

TISL,

1166

what is a NULL Pointer? Whether it is same as an uninitialized pointer?

TISL,

1216

What is NULL pointer?

Infosys,

1044

What are pointers?

Accenture, Tavant Technologies, Zensar,

1049

How do we open a binary file in Read/Write mode in C?

Alter,

1181

ASCII stands for

1 1465

What's a good way to check for "close enough" floating-point equality?

Celstream,

1097

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Un-Answered Questions { C }

Can we declare variable anywhere in c?

925

How many identifiers are there in c?

964

What is static identifier?

1172

What is an lvalue in c?

1068

What are the properties of union in c?

998

The difference between printf and fprintf is ?

1217

Why should I prototype a function?

1122

Explain how does flowchart help in writing a program?

1064

How do you print an address?

1215

How can I recover the file name given an open stream?

951

Why c is called a middle level language?

1054

Write a program to check whether a number is prime or not using c?

1011

Explain what is the difference between functions getch() and getche()?

991

The % symbol has a special use in a printf statement. Explain how would you place this character as part of the output on the screen?

1146

What are extern variables in c?

952

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