第九周 任务一

/* (程序头部注释开始) 
* 程序的版权和版本声明部分 
* Copyright (c) 2011, 烟台大学计算机学院学生  
* All rights reserved. 
* 文件名称：   Triangle.cpp                            
* 作    者：      计114-4   刘向一            
* 完成日期：   2012 年 4月17日 
* 版 本 号：   V 1.0 
* 对任务及求解方法的描述部分 
* 输入描述： 
* 问题描述：
* 程序输出：  
* 程序头部的注释结束 

*/

#include<iostream.h>    
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 istream& operator >> (istream&,Complex&);  
private:    
    double real;    
    double imag;    
};    
//下面定义成员函数    
istream& operator >> (istream& input,Complex& c)  
{   
    input>>c.real>>c.imag;  
    return input;  
}

ostream &operator << (ostream &output,Complex &c)  
{  
    output<<"("<<c.real<<" "<<c.imag<<"i)"<<endl;  
    return output;  
}  
//复数相加： (a+bi)+(c+di)=(a+c)+(b+d)i.    
Complex Complex::operator+(Complex &c2)        
{      
    Complex c;       
    c.real=real+c2.real;      
    c.imag=imag+c2.imag;      
    return c;      
}      
//复数相减：(a+bi)-(c+di)=(a-c)+(b-d)i.          
Complex Complex::operator-(Complex &c2)          
{          
    Complex c;          
    c.real=real-c2.real;          
    c.imag=imag-c2.imag;          
    return c;          
}          
//复数相乘：(a+bi)(c+di)=(ac－bd)+(bc+ad)i.      
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;          
}          
//复数相除：(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +(bc-ad)/(c^2+d^2)i      
Complex Complex::operator/(Complex &c2)     
{          
    Complex  c;          
    double d=c2.real*c2.real+c2.imag*c2.imag;      
    c.real=(real*c2.real+imag*c2.imag)/d;           
    c.imag=(imag*c2.real-real*c2.imag)/d;          
    return c;          
}       

int main()    
{    
    Complex c1,c2,c3;   
    cout<<"请输入复数c1的值:（以a b的形式输入）";  
    cin>>c1;  
    cout<<"请输入复数c2的值:（以a b的形式输入）";  
    cin>>c2;  
    cout<<"c1=";    
    cout<<c1;    
    cout<<"c2=";    
    cout<<c2;    
    c3=c1+c2;    
    cout<<"c1+c2=";    
    cout<<c3;    
    c3=c1-c2;    
    cout<<"c1-c2=";    
    cout<<c3;    
    c3=c1*c2;    
    cout<<"c1*c2=";    
    cout<<c3;    
    c3=c1/c2;    
    cout<<"c1/c2=";    
    cout<<c3;     
    return 0;    
}