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

C Interview Questions

Questions Answers Views Company eMail

Why doesn't C support function overloading?

2 2789

Why n++ execute faster than n+1 ?

2 3033

What are the advantages of Macro over function?

1 2034

What is the difference between struct and union in C?

1 1328

What is call by reference in functions?

1 1464

What is pass by reference in functions?

855

What is a memory leak? How to avoid it?

1 1358

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

1 1422

What is typedef?

1 1438

Why is it usually a bad idea to use gets()? Suggest a workaround.

1 1799

What are dangling pointers? How are dangling pointers different from memory leaks?

1 1330

What is the difference between ‘g’ and “g” in C?

1 4018

Add Two Numbers Without Using the Addition Operator

834

Subtract Two Number Without Using Subtraction Operator

859

Multiply an Integer Number by 2 Without Using Multiplication Operator

772

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Un-Answered Questions { C }

How do you determine whether to use a stream function or a low-level function?

1133

What is the difference between procedural and functional programming?

1087

What is the purpose of type declarations?

1122

What is wrong with this declaration?

1114

Can a pointer be static?

1091

write a c program for swapping two strings using pointer

2641

An arrangement of information in memory in such a way that it can be easily accessed and processed by a programming language a) string b) data structure c) pointers d) array

1147

What is s in c?

1060

The difference between printf and fprintf is ?

1298

What is signed and unsigned?

1072

a formula,a series of steps,or well defined set of rules for solving a problem a) algorithem b) program c) erdiagram d) compiler

1085

In a header file whether functions are declared or defined?

1133

If jack lies on Mon, Tue Wed and jill lies on Thursday, Friday and Saturday. If both together tell they lied yesterday. So c the given options and then c cos in the given dates one will be saying the truth and one will be lying. I got Thursday as option because jack is saying the truth he lied yest but jill is lying again as he lies on that day.

2283

What math functions are available for integers? For floating point?

1144

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

1063

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