#include <stdio.h>
int main() 
{
    int n1,n2,sum;
    int*ptr1,*ptr2,*psum;
    pn1=&n1,pn2=&n2,psum=&sum;
    printf("enter any two integer\n");
    scanf("%d%d",pn1,pn2);
    *psum=*pn1+*pn2;
    printf("sum of two numbers is %d",*psum);
    return 0;
}