第九周上机任务（一）

/** Copyright (c) 2012, 烟台大学计算机学院* All rights reserved.* 作    者：孙永* 完成日期：2013  年 05  月 08 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>#include <Cstring>using namespace std;class Complex{public: Complex( ){real=0;imag=0;} //Complex(double r,double i){real=r;imag=i;} friend Complex operator+(Complex &c1,Complex &c2); friend Complex operator-(Complex &c1,Complex &c2); friend Complex operator*(Complex &c1,Complex &c2); friend Complex operator/(Complex &c1,Complex &c2); friend istream& operator>>(istream &cin,Complex&c); friend ostream& operator<<(ostream &cout,Complex&c);private: double real; double imag;};Complex operator+(Complex &c1,Complex &c2){ Complex c; c.real=c1.real+c2.real; c.imag=c1.imag+c2.imag; return c;}Complex operator-(Complex &c1,Complex &c2){ Complex c; c.real=c1.real-c2.real; c.imag=c1.imag-c2.imag; return c;}Complex operator*(Complex &c1,Complex &c2){ Complex c; c.real=c1.real*c2.real-c1.imag*c2.imag; c.imag=c1.imag*c2.real+c1.real*c2.imag; return c;}Complex operator/(Complex &c1,Complex &c2){ Complex c; c.real=(c1.real/c2.real+c1.imag/c2.imag)/(c2.real*c2.real+c2.imag*c2.imag); c.imag=(c1.imag/c2.real-c1.real/c2.imag)/(c2.real*c2.real+c2.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;}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：