#include<iostream>
#include<string>
using namespace std;
//1、值传递
void mySwap01(int a, int b) {
int temp = a;
a = b;
b = temp;
cout << "mySwap01 a=" << a << endl;
cout << "mySwap01 b=" << b << endl;
}
//2、地址传递
void mySwap02(int * a, int * b) {
int temp = *a;
*a = *b;
*b = temp;
cout << "mySwap01 a=" << *a << endl;
cout << "mySwap01 b=" << *b << endl;
}
//3、引用传递
void mySwap03(int &a,int &b) {
int temp = a;
a = b;
b = temp;
cout << "mySwap03 a=" << a << endl;
cout << "mySwap03 b=" << b << endl;
}
int main() {
int a = 10;
int b = 20;
mySwap01(a,b); //值传递，形参不会修饰实参
// mySwap02(&a, &b);
// mySwap03(a, b);
cout << "a="<<a<<endl;
cout << "b="<<b<<endl;
system("pause" ) ;
}
值传递实参不会改变
地址传递会改变实参的值
引用传递
