#include<stdio.h>
#include<stdlib.h>

struct data                                      //struct data
{
char name[10];
int math;
};

void swap(struct data *p1,struct data *p2)       //將兩個struct 對調
{
struct data tmp;
tmp=*p1;
*p1=*p2;
*p2=tmp;
};

int main()
{
struct data *student[2]={{"john",100},{"tom",90}};            //宣告兩個結構指標
swap(student[0],student[1]);
printf("%s got %d\n",student[1]->name,student[1]->math);
return 0;
}