#include<stdio.h>
void change(int *pa,int *pb);//선언
void main()
{
int a=100,b=200;
printf("원래 a=%d\tb=%d\n",a,b);
change(&a,&b);//call by reference
printf("바뀐 후 a=%d\tb=%d\n",a,b);
}
void change(int *pa, int *pb)
{
int temp;
temp=*pa;
*pa=*pb;
*pb=temp;
}
