代码

#include <iostream>
using namespace std;//实现两个数字进行交换
void swap01(int a, int b)
{int temp = a;a = b;b = temp;cout << "swap01a= " << a << endl;cout << "swap01b= " << b << endl;
}void swap02(int * p1, int * p2)
{int temp = *p1;*p1 = *p2;*p2 = temp;
}int main()
{//指针和函数//1、值传递int a = 10;int b = 20;swap01(a, b);cout << "a= " << a << endl;cout << "b= " << b << endl;//2、地址传递//如果是地址传递，可以修改实参swap02(&a, &b);cout << "a= " << a << endl;cout << "b= " << b << endl;system("pause");return 0;
}