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 2776

Why n++ execute faster than n+1 ?

2 3019

What are the advantages of Macro over function?

1 2027

What is the difference between struct and union in C?

1 1316

What is call by reference in functions?

1 1455

What is pass by reference in functions?

848

What is a memory leak? How to avoid it?

1 1350

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

1 1417

What is typedef?

1 1431

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

1 1789

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

1 1320

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

1 4012

Add Two Numbers Without Using the Addition Operator

828

Subtract Two Number Without Using Subtraction Operator

853

Multiply an Integer Number by 2 Without Using Multiplication Operator

768

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Un-Answered Questions { C }

Explain what are the standard predefined macros?

1120

Explain what is the difference between functions abs() and fabs()?

1187

What are pointers really good for, anyway?

1066

In a switch statement, what will happen if a break statement is omitted?

1066

What is the difference between %d and %i?

1100

Why is c platform dependent?

1092

In c programming typeing to occupy the variables in memory space. if not useing the variable the memory space is wasted.ok, how to avoid the situation..? (the variable is used & notused)

2127

Difference between constant pointer and pointer to a constant.

1149

What is 'bus error'?

1155

What is meant by errors and debugging?

1111

What are the storage classes in C?

1160

What are header files in c programming?

1137

Is javascript based on c?

1066

What is the benefit of using #define to declare a constant?

1098

which of the following is not a character constant a) 'thank you' b) 'enter values of p, n ,r' c) '23.56E-o3' d) all of the above

2065

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