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 9347

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

3 5614

write a string copy function routine?

2 5107

swap two integer variables without using a third temporary variable?

Persistent,

6 10765

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

1 3662

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

Infosys, TATA,

13 34665

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

CTS, TCS, Wipro,

9 15406

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

4 5904

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

2 8154

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

5 8979

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

4 8052

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

College School Exams Tests, HCL, TCS,

2 7820

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

1 3975

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 4653

What is the relation between # and include

HCL,

5 9151

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Un-Answered Questions { C }

Explain void pointer?

1096

What is main return c?

1050

What is the difference between far and near in c?

1121

Differentiate between static and dynamic modeling.

1187

Explain what is the advantage of a random access file?

1176

What is infinite loop?

1133

How the c program is executed?

1198

List the difference between a 'copy constructor' and a 'assignment operator' in C?

1141

What are the rules for the identifier?

1219

What is the heap?

1258

Write a program to find factorial of a number using recursive function.

1179

How do I read the arrow keys? What about function keys?

1150

What is local and global variable in c?

1253

What is memcpy() function?

1167

Explain what are preprocessor directives?

1126

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