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 9354

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 12181

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 13599

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 17153

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

TCS,

9 20810

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 9309

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

TCS, ZenQ,

2 13140

# 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 21385

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 15412

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

TCS,

7 12141

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

Amdocs, TCS,

10 27942

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 10781

int *a[5] refers to

TCS,

12 27092

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 16513

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 27136

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Un-Answered Questions { C }

Is c compiled or interpreted?

1250

Can true be a variable name in c?

1090

Explain what is the difference between functions abs() and fabs()?

1261

Why double pointer is used in c?

1090

What is a floating point in c?

1126

write a sorting prgm to sort 50 nos and sum them and also remove all the occurrences of 15 and print it?

2184

With the help of using classes, write a program to add two numbers.

1081

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

1091

WRITE A PROGRAM TO MERGE TWO SORTED ARRAY USING MERGE SORT TECHNIQUE..

2138

What is the argument of a function in c?

1101

Explain Function Pointer?

1244

How would you use the functions fseek(), freed(), fwrite() and ftell()?

1204

What would happen to X in this expression: X += 15; (assuming the value of X is 5)

2020

Is flag a keyword in c?

1216

Difference between malloc() and calloc() function?

1271

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