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

C Interview Questions

Questions Answers Views Company eMail

Determine the result of performing two successive block transfers into the same area of a frame buffer using the binary arith operations

2426

Device an algorithm for weiler-atherton polygon clipping, where the clipping window can be any specified polygon

6028

dennis ritchie invented C language in AT&T bell laboratory what is the extension of AT&T?

4 7999

Please provide question papers of NATIONAL INFORMATICS CENTRE for Scientific officer

3005

i need all types of question paper releted to "c" and other language.

2448

what is the output of the following program? #include void main() { float x=1.1; while(x==1.1) { printf("\n%f",x); x=x-0.1; } }

6 21570

what is the output of the following program? #include void main() { int x=4,y=3,z; z=x-- -y; printf("\n%d %d %d",x,y,z); }

14 20731

do you think its fraud or original company?

2117

what is the output of the following code? main() { int I; I=0x10+010+10; printf("x=%x",I); } give detailed reason

3 26835

Can we include one C program into another C program if yes how?

Infosys,

7 13037

What is the difference between constant pointer and pointer to a constant. Give examples.

TCS,

4 12719

what is the output of the following program? main() { int c[]={2,8,3,4,4,6,7,5}; int j,*p=c,*q=c; for(j=0;j<5;j++) { printf("%d",*c); ++q; } for(j=0;j<5;j++) { printf("%d",*p); ++p; } }

4 8532

what is the output of the following program? main() { int i=-1,j=-1,k=0,l=2,m; m=i++&&j++&&k++||l++; printf("%d %d %d %d %d",i,j,k,l,m); }

7 11337

In the following control structure which is faster? 1.Switch 2.If-else and which consumes more memory?

4 7548

What should not contain a header file?

2 4906

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Un-Answered Questions { C }

What are volatile variables in c?

1006

1) There is a singing competition for children going to be conducted at a local club. Parents have been asked to arrive at least an hour before and register their children’s names with the Program Manager. Whenever a participant registers, the Program Manager has to position the name of the person in a list in alphabet order. Write a program to help the Program Manager do this by placing the name in the right place each time the Program Manger enters a name. The Logic should be written in Data Structures?

2533

In which header file is the null macro defined?

1409

What are different storage class specifiers in c?

1150

I need a sort of an approximate strcmp routine?

1085

Explain the advantages of using macro in c language?

1064

How many levels of pointers have?

1116

What is structure and union in c?

1216

What is the difference between ++a and a++?

1278

Explain how does free() know explain how much memory to release?

1144

Difference between linking and loading?

1164

How do you sort filenames in a directory?

1240

Where can I get an ansi-compatible lint?

1213

What is the difference between struct and union in C?

1398

What is nested structure?

1115

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