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

C Interview Questions

Questions Answers Views Company eMail

Difference between Shallow copy and Deep copy?

2026

#include void main() { char *str; long unsigned int add; str="Hello C"; add=&str[0]; printf("%c",add); } What is the output?

Infosys,

4 10233

hello everybody can we change a the adress of a variabl i mean can i put for exemple for a int *p: &p=6 ?????????

1 3623

please send me the code for multiplying sparse matrix using c

2177

what is diference between return 0 and return NULL??

3 6135

#include void main() { int a=5,b=6,c; int x=(a

IBM,

8 21342

What are pointers in C?

KPIT,

5 9209

what is difference between #include and #include"stdio.h"

4 6997

how to solve "unable to open stdio.h and conio.h header files in windows 7 by using Dos-box software

3322

Write a function that accepts a sentence as a parameter, and returns the same with each of its words reversed. The returned sentence should have 1 blank space between each pair of words. Demonstrate the usage of this function from a main program. Example: Parameter: “jack and jill went up a hill” Return Value: “kcaj dna llij tnew pu a llih”

Mind Tree,

5 19790

Explain this code. #include void f1(int *k) { *k = *k + 10; } main ( ){ int i; i = 0; printf (" The value of i before call %d \n", i); f1 (&i); printf (" The value of i after call %d \n", i); }

IBM,

3 5133

LOGIC OF Bodmas?

1 8064

main() { int i = -3,j=2,k=0,m; m= ++i || ++j && ++k; printf("%d%d%d",i,j,k,m); }

HCL,

7 25951

define c

HCL, TCS,

6 8385

what is C?

Syntel,

9 11146

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Un-Answered Questions { C }

Can a program have two main functions?

1131

Design a program which assigns values to the array temperature. The program should then display the array with appropriate column and row headings.

2327

Differentiate between a for loop and a while loop? What are it uses?

1188

How many types of sorting are there in c?

1061

What is variables in c?

1054

What is "Duff's Device"?

1170

printf(), scanf() these are a) library functions b) userdefined functions c) system functions d) they are not functions

1160

What are pointers? Why are they used?

1184

How can a program be made to print the line number where an error occurs?

1089

Where we use clrscr in c?

1141

Study the following C program :call_me (myvar)int myvar;{ myvar +- 5; }main(){int myvar;myvar = 3;call_me(myvar);printf("%d ",myvar);What will be printed a) 3 b) 5 c) 8 d) symbol

1124

What math functions are available for integers? For floating point?

1138

Function calling procedures? and their differences? Why should one go for Call by Reference?

1085

What is a null pointer assignment error? What are bus errors, memory faults, and core dumps?

1439

Write an algorithm for implementing insertion and deletion operations in a singly linked list using arrays ?

3522

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