#include<stdio.h>
static void display(int i, int *ptr);

int main(void) {
   int x = 5;
   int *xptr = &x;
   printf("In main():\n");
   printf("   x is %d and is stored at %p.\n", x, &x);
   printf("   xptr points to %p which holds %d.\n", xptr, *xptr);
   display(x, xptr);
   return 0;
}
   
void display(int z, int *zptr) {
    printf("In display():\n");
    printf("   z is %d and is stored at %p.\n", z, &z);
    printf("   zptr points to %p which holds %d.\n", zptr, *zptr);
}