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 5696

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 16287

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 13067

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 7946

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 11819

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

11 13851

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

2 11484

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

2 9249

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

4 12075

how to find the sizof of any datatype using bit manipulations

3 6339

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

CMC, Wipro,

2 8977

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 6514

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 11762

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 4013

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

3155

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Un-Answered Questions { C }

Explain the difference between call by value and call by reference in c language?

1165

What are the back slash character constants or escape sequence charactersavailable in c?

1234

Why pointers are used?

1120

What are header files why are they important?

1157

Give the rules for variable declaration?

1223

How can I write a function that takes a format string and a variable number of arguments?

1107

What does printf does?

1324

Write a program to reverse a linked list in c.

1183

How are 16- and 32-bit numbers stored?

1332

Tell us the use of fflush() function in c language?

1205

What is the explanation for prototype function in c?

1036

What is %d used for?

1096

What is the difference between single charater constant and string constant?

1141

develop algorithms to add polynomials (i) in one variable

2241

What is structure packing in c?

1142

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