study of pointers - 1.

#include <stdio.h>

int main(void)
{
int *ip, num = 100;

printf("\nnum = %d", num);

ip = &num;

printf("\nnum = %d\t*ip = %d", num, *ip);

*ip = 200;

printf("\nnum = %d\t*ip = %d", num, *ip);


return 0;
}