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：