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C Interview Questions
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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 3013

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 6543

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 6365

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 4644

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 5993

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

11 7239

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

2 6492

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

2 6352

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

4 4560

how to find the sizof of any datatype using bit manipulations

3 3186

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

CMC, Wipro,

2 5823

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 3718

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

Oracle,

3 9190

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 2082

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

2053


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Un-Answered Questions { C }

Why flag is used in c?

156


What is bubble sort technique in c?

169


Can you subtract pointers from each other? Why would you?

186


What is pointer & why it is used?

190


What is output redirection?

232






Explain threaded binary trees?

201


How do you sort filenames in a directory?

231


Draw a diagram showing how the operating system relates to users, application programs, and the computer hardware ?

1649


Write an algorithm for implementing insertion and deletion operations in a singly linked list using arrays ?

2589


.find the output of the following program? char*myfunc(char*ptr) { ptr +=3; return (ptr); } int main() { char*x,*y; x="HELLO"; y=myfunc(x); printf("y = %s ",y); return 0; }

725


What is "Hungarian Notation"?

229


Is c procedural or functional?

152


#define f(g,h) g##h main O int i=0 int var=100 ; print f ("%d"f(var,10));} wat would be the output??

1100


diff between exptected result and requirement?

1149


What are the scope of static variables?

177