第十二周课后实践（1）

Copyright (c) 2016,烟台大学计算机学院.
All rights reserced.
文件名称：test.cpp
作者        ：秦通
完成日期：2016.6.16
版本号 :Codeblocks
程序输入：

#include<iostream>using namespace std;class Sample{private:    int x;public:    Sample () {}    Sample(int a){x=a;}    void disp(){cout<<"x="<<x<<endl;}    friend Sample operator+( Sample &s1, Sample &s2);};Sample operator+( Sample &s1, Sample &s2){return Sample(s1.x+s2.x);}int main(){    Sample obj1(10);    Sample obj2(20);    Sample obj3;    obj3=obj1+obj2;    obj3.disp();    return 0;}

程序结果：