郝斌的C语言基础 127 指针经典程序 两数互换

#include<stdio.h>

void huhuan(int *p,int *q)
{
    int temp;
    temp = *p;
    *p = *q;
    *q = temp;
}

int main(void)
{
    int a = 3;
    int b = 5;
    huhuan(&a, &b);

    printf("a = %d,   b = %d\n",a,b);
    return 0;
}