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

C Interview Questions

Questions Answers Views Company eMail

the operator for exponencation is a.** b.^ c.% d.not available

TCS,

5 9192

what is y value of the code if input x=10 y=5; if (x==10) else if(x==9) elae y=8; a.9 b.8 c.6 d.7

TCS,

4 12027

what does the following code do? fn(int n,int p,int r) { static int a=p; switch(n){ case 4:a+=a*r; case 3:a+=a*r; case 2:a+=a*r; case 1:a+=a*r; } } a.computes simple interest for one year b.computes amount on compound interest for 1 to 4 years c.computes simple interest for four year d.computes compound interst for 1 year

TCS,

7 13383

a=0; while(a<5) printf("%d\n",a++); how many times does the loop occurs? a.infinite b.5 c.4 d.6

TCS,

7 16887

how many times does the loop iterated ? for (i=0;i=10;i+=2) printf("Hi\n");

TCS,

9 20581

which of the following go out of the loopo if expn 2 becoming false a.while(expn 1){...if(expn 2)continue;} b.while(!expn 1){if(expn 2)continue;...} c.do{..if(expn 1)continue;..}while(expn 2); d.while(!expn 2){if(expn 1)continue;..}

TCS,

4 9151

pick out the odd one out of the following a.malloc() b.calloc() c.free() d.realloc()

TCS, ZenQ,

2 13054

# define prod(a,b)=a*b main() { int x=2; int y=3; printf("%d",prod(x+2,y-10)); } the output of the program is a.8 b.6 c.7 d.none

Microsoft, TCS,

7 21153

consider the following program sigment int n,sum=1; switch(n) { case 2:sum=sum+2; case 3:sum*=2; break; default:sum=0;} if n=2, what is the value of sum a.0 b.6 c.3 d.none

TCS,

7 15205

the format specified for hexa decimal is a.%d b.%o c.%x d.%u

TCS,

7 11940

find the output of the following program main() { int x=5, *p; p=&x; printf("%d",++*p); }

Amdocs, TCS,

10 27675

consider the following C code main() { int i=3,x; while(i>0) { x=func(i); i--; } int func(int n) { static sum=0; sum=sum+n; return(sum); } the final value of x is

TCS,

4 10649

int *a[5] refers to

TCS,

12 26672

which of the following statements is incorrect a.typedef struct new{ int n1; char n2; } DATA; b.typedef struct { int n3; char *n4; }ICE; c.typedef union { int n5; float n6; } UDT; d.#typedef union { int n7; float n8; } TUDAT;

Assurgent, TCS,

5 16333

main() { char *p1="Name"; char *p2; p2=(char *)malloc(20); while(*p2++=*p1++); printf("%s\n",p2); } what is the output?

AMCAT, HCL, Ramco, Zycus Infotech,

7 26915

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Un-Answered Questions { C }

What is hashing in c?

1165

What is variables in c?

1054

Explain indirection?

1144

write a program to convert a expression in polish notation(postfix) to inline(normal) something like make 723+* (2+3) x 7 (not sure) just check out its mainly printing expression in postfix form to infix.

2838

Explain what header files do I need in order to define the standard library functions I use?

1173

What is a good way to implement complex numbers in c?

1053

Find MAXIMUM of three distinct integers using a single C statement

1071

What is the use of sizeof?

1022

Differentiate between null and void pointers.

1169

Using which language Test cases are added in .ptu file of RTRT unit testing???

4287

Is c still relevant?

1087

How many header files are in c?

1039

Why do we need arrays in c?

1160

GIven a sequence of characters. How will you convert the lower case characters to upper case characters. ( Try using bit vector - sol given in the C lib -> typec.h)

1103

Why doesnt the call scanf work?

1195

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