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

C Interview Questions

Questions Answers Views Company eMail

write a prgram of swapping with 2 valiables

6 6918

Why c++ is called c++ and not c+?

EBS,

9 31364

how to set Nth bit of a variable?

1 8062

what is the output on the screen? int n; n=printf("my name is %d",printf("kiran %d",printf("kumar"))); printf("\n %d \n",n);

TCS,

4 6633

what is the output of below int n=10; (n++)++; printf("%d",n);

3 10319

why we need function pointers?

3 6549

how to find your architecture is LittleEndian or BigEndian?

1 4667

Linked list is a Linear or non linear explain if linear how it working as a non linear data structures

2191

Write a program that takes a 5 digit number and calculates 2 power that number and prints it

ABS, Accenture, HCL, Infosys, Infotech, SoftSolve, Software India, TCS, Vertex, Vimukti Technologies,

5 15879

write a program wch produces its own source code aas its output?

IonIdea,

1 7433

write a program which will count occurance of a day between two dates.

IonIdea,

1 6859

how to set Nth bit of variable by using MACRO

HCL,

3 27088

#include void main() { int a,b,c; a=b=c=1; c=++a || ++b && ++c; printf("%d\t%d\t%d",a,b,c); }

3 9795

write C code to reverse a string such that if i/p is "abc defg hij klmno pqrs tuv wxyz" and the o/p should be "cba gfed jih onmlk srqp vut zyxw"

2 5489

diff .between strcture and union

2 4526

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Un-Answered Questions { C }

Can a local variable be volatile in c?

1006

What are the features of c language?

1075

a construct the"else" part of "if" statement contains anoth "if else" statement is called a) if-else b) else-if-else c) if-else-if-else d) chain if/if-else-if

1152

What is structure in c explain with example?

1169

What is "Duff's Device"?

1175

Difference between MAC vs. IP Addressing

1156

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

1133

What are volatile variables in c?

958

If null and 0 are equivalent as null pointer constants, which should I use?

1235

Explain how can I prevent another program from modifying part of a file that I am modifying?

1100

Can a file other than a .h file be included with #include?

1168

This is a variation of the call_me function in the previous question:call_me (myvar)int *myvar;{ *myvar += 5; }The correct way to call this function from main() will be a) call_me(myvar) b) call_me(*myvar) c) call_me(&myvar) d) expanded memory

1290

Can include files be nested? How many levels deep can include files be nested?

1178

Is c language still used?

993

Why c is called object oriented language?

1075

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