第八周任务1方案2

/* (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：

* 作    者：        王明星
* 完成日期：     2012    年4     月    8  日
* 版 本 号：
* 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>
using namespace std;
class Complex
{
public:
Complex(){real=0;imag=0;}
Complex(double r,double i){real=r;imag=i;}
friend Complex operator+(Complex &c3,Complex &c2);
friend Complex operator-(Complex &c3,Complex &c2);
friend Complex operator*(Complex &c3,Complex &c2);
friend Complex operator/(Complex &c3,Complex &c2);
void display();
private:
double real;
double imag;
};
//下面定义成员函数
Complex operator+(Complex &c2,Complex &c3)
{
Complex a;
a.real=c2.real+c3.real;
a.imag=c2.imag+c3.imag;
return a;
}
Complex operator-(Complex &c2,Complex &c3)
{
Complex a;
a.real=c3.real-c2.real;
a.imag=c3.imag-c2.imag;
return a;
}
Complex operator*(Complex &c2,Complex &c3)
{
Complex a;
a.real=c3.real*c2.real-c3.imag*c2.imag;
a.imag=c2.imag*c3.real+c2.real*c3.imag;
return a;
}
Complex operator/(Complex &c3,Complex &c2)
{
Complex a;
a.real=(c3.real*c2.real+c3.imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
a.imag=(c3.imag*c2.real+c2.imag*c3.real)/(c2.real*c2.real+c2.imag*c2.imag);
return a;
}
void Complex::display()
{
cout<<"("<<real<<","<<imag<<"i"<<")"<<endl;
}

int main()
{
Complex c1(3,4),c2(5,-10),c3;
cout<<"c1=";
c1.display();
cout<<"c2=";
c2.display();
c3=c1+c2;
cout<<"c1+c2=";
c3.display();
c3=c1-c2;
cout<<"c1-c2=";
c3.display();
c3=c1*c2;
cout<<"c1*c2=";
c3.display();
c3=c1/c2;
cout<<"c1/c2=";
c3.display();
system("pause");
return 0;
}