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我一生的追求!!

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数据加载中……

C++中引用变量的用例

#include<iostream>

using namespace std;

int main()

{

int i = 1;

int &x = i; // 对变量I的引用

cout<<"i = "<<i<<" "<<"address = "<<&i<<endl;

cout<<"x = "<<x<<" "<<"address = "<<&x<<endl;

int y = 2;

x = y;

cout<<"i = "<<i<<" "<<"address = "<<&i<<endl;

cout<<"x = "<<x<<" "<<"address = "<<&x<<endl;

cout<<"y = "<<y<<" "<<"address = "<<&y<<endl;

return 0;

}

结果如下
i = 1 address = 0012ff6c
x= 1 address = 0012ff6c
i = 2 address = 0012ff6c
x= 2 address = 0012ff6c
y= ２address = 0012ff70

作为i的引用x，它们都指向相同的值和地址．
x=y;只是改变x的值，由于x是i的引用，所以，不能改变x的地址

posted on 2008-02-01 12:54 浴盆阅读(106) 评论(0) 编辑收藏网摘