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

C Interview Questions

Questions Answers Views Company eMail

1)what is the error in the following stmt where str is a char array and the stmt is supposed to traverse through the whole character string str? for(i=0;str[i];i++) a)There is no error. b)There shud be no ; after the stmt. c)The cond shud be str[i]!='\0' d)The cond shud be str[i]!=NULL e)i shud be initialized to 1

4 5523

main() { enum{red,green,blue=6,white}; pf("%d%d%d%d", red,green,blue,white); return 0; } a)0 1 6 2 b)0 1 6 7 c)Compilation error d)None of the above

6 16073

4)What would be the output? main() { int num=425; pf("%d",pf("%d",num)); } a)Comp error b)4425 c)4253 d)3435 e)none

10 12750

6)What would be the output? main() { int u=1,v=3; pf("%d%d",u,v); funct1(&u,&v); pf("%d%d\n",u,v); } void funct1(int *pu, int *pv) { *pu=0; *pv=0; return; } a)1 3 1 3 b)1 3 1 1 c)1 3 0 0 d)1 1 1 1 e) 3 1 3 1

4 7772

what wud be the output? main() { char *str[]={ "MANISH" "KUMAR" "CHOUDHARY" }; printf("\nstring1=%s",str[0]); printf("\nstring2=%s",str[1]); printf("\nstring3=%s",str[2]); a)string1=Manish string2=Kumar string3=Choudhary b)string1=Manish string2=Manish string3=Manish c)string1=Manish Kumar Choudhary string2=(null) string3=(null) d)Compiler error

Infosys,

9 11512

what will be the output of this program main() { int i=1; while (i<=10); { i++; } }

11 13470

main() { char x; while(x=0;x<=255;x++) printf("\nAscii value %d Charater %c",x,x); }

2 11372

main() { charx; while (x=0;x<=255;x++) printf("\nAscii value %d Character %c,x,x); }

2 9145

main() { intj; while9j<=10) { printf("\n%d",j); j=j+1; } }

4 11908

how to find the sizof of any datatype using bit manipulations

3 6183

How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?

CMC, Wipro,

2 8867

SIR PLS TELL ME THE CODE IN C LANGUAGE TO PRINT THE FOLLOWING SERIES 1 1 2 1 1 2 3 2 1 1 2 3 4 3 2 1 1 2 3 2 1 1 2 1 1

4 6380

what is the output of the program?? #include main ( ) { int a=010,sum=0,tracker: for(tracker=0;tracker<=a;tracker++) sum+=tracker; printf(“ %d\n”,sum); } what is the difference between a=10 and a=010??

Oracle,

3 11664

write a program for 4 4 3 3 3 3 2 2 2 2 2 2 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 4 4

1 3938

program to find out date after adding 31 days to a date in the month of febraury also consider the leap year

3094

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Un-Answered Questions { C }

Does sprintf put null character?

1048

How to declare pointer variables?

1244

What are the advantages of union?

1071

How #define works?

1105

What is sizeof c?

1077

What is restrict keyword in c?

1114

What the advantages of using Unions?

1233

How to draw the flowchart for structure programs?

9344

Write a program to print factorial of given number using recursion?

1017

Explain what is the use of a semicolon (;) at the end of every program statement?

1229

Tell me what is null pointer in c?

1082

What is hashing in c language?

1316

Is c language still used?

984

how do you write a function that takes a variable number of arguments? What is the prototype of printf () function?

1939

Why do we need arrays in c?

1160

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