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 7099

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

EBS,

9 31645

how to set Nth bit of a variable?

1 8157

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 6798

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

3 10415

why we need function pointers?

3 6674

how to find your architecture is LittleEndian or BigEndian?

1 4738

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

2234

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 16078

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

IonIdea,

1 7521

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

IonIdea,

1 6930

how to set Nth bit of variable by using MACRO

HCL,

3 27226

#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 9910

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 5598

diff .between strcture and union

2 4610

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Un-Answered Questions { C }

Are the outer parentheses in return statements really optional?

1162

main() { struct s1 { char *str; struct s1 *ptr; }; static struct s1 arr[] = { {"Hyderabad",arr+1}, {"Bangalore",arr+2}, {"Delhi",arr} }; struct s1 *p[3]; int i; < BR> for(i=0;i<=2;i++) p[i] = arr[i].ptr; printf("%s ",(*p)->str); printf("%s ",(++*p)->str); printf("%s ",((*p)++)->str); }

1511

Find duplicates in a file containing 6 digit number (like uid) in O (n) time.

3313

What is pointer and structure in c?

1287

Write a function which takes as parameters one regular expression(only ? and * are the special characters) and a string and returns whether the string matched the regular expression.

1158

What are the disadvantages of external storage class?

1108

What are the types of macro formats?

1167

Write a program on swapping (100, 50)

1168

Is c easier than java?

1125

What is extern storage class in c?

1059

Why do we use & in c?

1052

What is use of bit field?

1355

What is main () in c?

1122

Why clrscr is used in c?

1065

What is s or c?

1123

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