九周 项目 1

/*
* 程序的版权和版本号声明部分:
* Copyright (c) 2013, 烟台大学计算机学院
* All rights reserved.
* 文件名：test.cpp
* 作    者：赵加响
* 完毕日期：2014年 4月 22日
* 输入描写叙述：
* 程序输出：
* 问题分析：略
* 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 ostream&operator<<(ostream&,Complex&);
    friend Complex operator-(Complex &c);//取负
private:
    double real;
    double imag;
};
//以下定义成员函数
Complex operator-(Complex &c)
{
    Complex c1;
    c1.imag=0-c.imag;
    c1.real=0-c.real;
    return c1;
}
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-imag*c2.imag);
     c.imag=imag*c2.real+real*c2.imag;
     return c;
}
Complex Complex::operator/(Complex &c2)
{
     Complex c;
     c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
     c.imag=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
     return c;
}
ostream&operator<<(ostream&output,Complex&c)
{
    if(c.imag>0)
    {
    output<<"("<<c.real<<"+"<<c.imag<<"i)"<<endl;
    }
    else
    output<<"("<<c.real<<"-"<<-c.imag<<"i)"<<endl;
    return output;
}
//以下定义用于測试的main()函数
int main()
{
    Complex c1(3,4),c2(5,-10),c3;
    cout<<"c1=";
    cout<<c1<<endl;
    cout<<"c2=";
    cout<<c2<<endl;
    c3=c1+c2;
    cout<<"c1+c2=";
    cout<<c3<<endl;
    c3=c1-c2;
    cout<<"c1-c2=";
    cout<<c3<<endl;
    c3=c1*c2;
    cout<<"c1*c2=";
    cout<<c3<<endl;
    c3=c1/c2;
    cout<<"c1/c2=";
    cout<<c3<<endl;
    return 0;
}

感悟：还行吧！！

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！。！