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

2363

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

5953

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

4 7803

Please provide question papers of NATIONAL INFORMATICS CENTRE for Scientific officer

2955

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

2398

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 21317

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 20166

do you think its fraud or original company?

2043

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

3 26642

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

Infosys,

7 12749

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

TCS,

4 12489

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 8333

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 11096

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

4 7326

What should not contain a header file?

2 4790

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Un-Answered Questions { C }

What is difference between structure and union in c programming?

1107

Why are algorithms important in c program?

1121

What is file in c language?

1005

What is the purpose of 'register' keyword in c language?

1029

What is a pointer on a pointer in c programming language?

1141

Why do we use namespace feature?

1057

How main function is called in c?

1125

What is the difference between the = symbol and == symbol?

1118

What could possibly be the problem if a valid function name such as tolower() is being reported by the C compiler as undefined?

1283

What are the general description for loop statement and available loop types in c?

1129

Why we use conio h in c?

1236

why use functions a) writing functions avoids rewriting the same code over and over b) using functions it becomes easier to write programs and keep track of what they are doing c) a & b d) none of the above

1155

How can a string be converted to a number?

1021

When is a “switch” statement preferable over an “if” statement?

1151

What are c identifiers?

1089

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