Paper 3

Practice: Paper 1   Paper 2  Paper 3    Paper 4

#include <stdio.h>

int main()

{

int  a,*b;

*b=10;

printf("%d",*b);

return 0;

}

a) compilation error

b) Runtime error

c) 10

d) linker error

Ans: b

What will be the output of following program?

#include<stdio.h>

int main()

{

const int x=10;

int*p;

p=&x;

*p=20;

printf("%d %d",*p, x);

return 0;

}

Ans: 20 20  

#include<stdio.h>

int main()

{

int a[5] = {1,2,3,4,5};

int *ptr = (int*)(&a+1);

printf("%d",*(a+1)+*(ptr-1));

return 0;

}

Ans:7

What will be the output of following program?

#include "stdio.h"

int main()

{

char arr[] = { 'A', 'X', 'C', 'Y' };

char *ptr = &arr[0];

*ptr++;

printf("%c",*ptr);

}

a)C

b)X

c)B 

d)A

Ans: b

What will be the output of following program?
#include "stdio.h"
int main()
{
char arr[] = { 'A', 'X', 'C', 'Y' };
char *ptr = &arr[0];
*ptr++;
printf("%c",--*ptr);
}

a)C 
b)A
c)B 
d)W

Ans: d
What will be the output of following program?
#include "stdio.h"
int main()
{
char arr[] = { 'A', 'X', 'C', 'Y' };
char *ptr = &arr[0];
*ptr++;
printf("%c %c ", *++ptr, --*ptr);
}
a)CX
b)XC
c)XA
d)CW

Ans: d

What will be the output of the below code
main ()
{
char* st1="Hello";
char* st2="Hello";
if (st1==st2)
printf("same");
else
printf("different");
}
A.run time error
B.compile time error
C.different
D.same

Ans: D