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

C Interview Questions

Questions Answers Views Company eMail

what is output of the following statetment?Printf(“%x”, -1<<4); ?

5 9203

will the program compile? int i; scanf(“%d”,i); printf(“%d”,i);

3 5497

write a string copy function routine?

2 4998

swap two integer variables without using a third temporary variable?

Persistent,

6 10562

how do you redirect stdout value from a program to a file?

1 3592

write a program that finds the factorial of a number using recursion?

Infosys, TATA,

13 34249

write a “Hello World” program in “c” without using a semicolon?

CTS, TCS, Wipro,

9 15124

Give a method to count the number of ones in a 32 bit number?

4 5769

write a program that print itself even if the source file is deleted?

2 8045

Given an unsigned integer, find if the number is power of 2?

5 8811

what is the difference between these initializations? Char a[]=”string”; Char *p=”literal”; Does *p++ increment p, or what it points to?

4 7930

differentiate between const char *a; char *const a; and char const *a;

College School Exams Tests, HCL, TCS,

2 7685

Why cann't whole array can be passed to function as value.

1 3897

Given a single Linked list with lakhs of nodes and length unknown how do you optimally delete the nth element from the list?

Oracle,

1 4569

What is the relation between # and include

HCL,

5 8947

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Un-Answered Questions { C }

What are the differences between new and malloc in C?

1150

How can you increase the size of a statically allocated array?

1081

What is a stream?

1146

Write a program to reverse a given number in c language?

1118

Is anything faster than c?

1016

How is a structure member accessed?

1134

A variable that is defined in a specified portion of a program but can be used throughout the program a) global variable b) local variable c) character d) none

1249

What will the preprocessor do for a program?

1077

What are qualifiers?

1051

Write a program to reverse a linked list in c.

1135

how logic is used

1973

How is a null pointer different from a dangling pointer?

1033

What is local and global variable in c?

1208

Can we compile a program without main() function?

1126

What are structure types in C?

1105

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