第九周项目一

/*
* Copyright (c) 2012, 烟台大学计算机学院
* All rights reserved.
* 作    者：王俊
* 完成日期：2013  年 5  月 7 日
* 版 本 号：v1.0
* 输入描述：
* 问题描述：定义Complex类中的<<和>>运算符的重载，实现输入和输出，
      改造原程序中对运算结果显示方式，使程序读起来更自然。
* 程序输出：
* 问题分析：
* 算法设计：略
*/

#include <iostream>using namespace std;class Complex{public:Complex(){real=0;imag=0;}Complex(double r,double i){real=r;imag=i;}Complex operator+(Complex &c2);Complex operator-(Complex &c2);Complex operator*(Complex &c2);Complex operator/(Complex &c2);friend istream& operator>>(istream &cin,Complex&c);    friend ostream& operator<<(ostream &cout,Complex&c); private:double real;double imag;};//下面定义成员函数 Complex Complex::operator+(Complex &c2)    {    Complex c;    c.real=real+c2.real;    c.imag=imag+c2.imag;    return c;    }Complex Complex:: operator-(Complex &c2){Complex c;    c.real=real-c2.real;    c.imag=imag-c2.imag;    return c;}Complex Complex:: operator*(Complex &c2){Complex c;    c.real=real*c2.real;    c.imag=imag*c2.imag;    return c;}Complex Complex:: operator/(Complex &c2){Complex c;    c.real=real/c2.real;    c.imag=imag/c2.imag;    return c;}istream & operator>>(istream&cin,Complex&c){    cout<<"请输入复数的实部与虚部"<<endl;    cin>>c.real>>c.imag;    return cin;}ostream & operator<<(ostream &cout,Complex&c){    cout<<"(";    cout<<c.real;    cout<<","<<c.imag<<"i)"<<endl;    return cout;}//下面是测试函数int main(){    Complex c1,c2,c3; cin>>c1>>c2; cout<<c1<<c2<<endl; c3=c1+c2; cout<<"c1+c2="<<c3<<endl;        c3=c1-c2; cout<<"c1-c2="<<c3<<endl; c3=c1*c2; cout<<"c1*c2="<<c3<<endl;        c3=c1/c2; cout<<"c1/c2="<<c3<<endl; return 0;}

运行结果：