Persistent C Programming Quiz-1

Question 1

Time: 00:00:00

what is int(*(*ptr (int))(void)

int is function (taking an int argument) returning pointer to pointer to function (taking in a void argument) returning ptr

ptr is function (taking an int argument) returning pointer to pointer to function (taking in a void argument) returning int

pointer to pointer argument

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is int(*(*ptr (int))(vo

a

in the inner bracket *ptr is a pointer and in the outer bracket we declare another pointer to p

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Question 2

Time: 00:00:00

What is Output? func(char *s1,char * s2) { char *t; t=s1; s1=s2; s2=t; } void main() { char *s1=?jack?, *s2=?jill?; func(s1,s2); printf(?%s %s ?,s1,s2); }

jack hill

Jacks hill

jack jill

Jacks jill

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Question 3

Time: 00:00:00

What is output? void main() { int a[5] ={1,2,3,4,5},i,j=2,b; for (i =0;i<5;i++ ) func(j,a[i]); for (i =0;i<5;i++ ) printf(?%d?,a[i]); } func(int j,int *a) { j=j+1; a=a+j; b= b+2; }

12345

13579

23456

54321

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Question 4

Time: 00:00:00

void main() { for (a=1;a<=100;a++) for(b=a;b<=100;b++) foo(); } foo() { } how many times foo will be called.

5555

5050

6666

6060

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Question 5

Time: 00:00:00

What will be the output



main() 



{ 



    int x=20,y=35; 



    x=y++ + x++; 



    y= ++y + ++x; 



    printf("%d%d",x,y);



}

5 7 8 4

5 7 9 4

5 7 9 2

5 7 8 8

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Question 6

Time: 00:00:00

What will be the o/p? main() { int x=5; printf("%d,%d,%d",x,x<<2,x>>2); }

5,21,1

5,20,1

6,20,5

6.21,3

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Question 7

Time: 00:00:00

What is the output? main () { int i, j, k; i = 3; j =2*(i++); k =2*(++i); } which one of the given option is correct?

j = 8,k =12

j = 6, k=10

j = 9,k=14

j=4,k = 8

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Question 8

Time: 00:00:00

How many time it will execute the loop?

main()



{



 int i;



 i=0;



 do



 {



 --i;



 printf("%d",i);



 i++;



 }



 while(i>=0);



}

2

4

10

infinite

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Question 9

Time: 00:00:00

Switch (option)

{



 case 'H' : printf("Hello");



 case 'W' : printf("Welcome");



 case 'B' : printf("Bye");



 break;



}



what would be the output if option = 'H' ?