第九周实验报告（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：    Complex                        
* 作    者：       苗向前
* 完成日期： 2012   年 4 月 18  日
* 版 本 号：       V 9.0

#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 istream&operator >> (istream&,Complex&);
private:
double real;
double imag;
};
//下面定义成员函数
Complex Complex::operator+ (Complex &c2)
{
return Complex(this->real + c2.real, this->imag + c2.imag);
}
Complex Complex::operator- (Complex &c2)
{
return Complex(this->real - c2.real, this->imag - c2.imag);
}
Complex Complex::operator* (Complex &c2)
{
Complex c;

c.real = real*c2.real - imag*c2.imag;
c.imag = real*c2.imag + imag*c2.real;

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 = (-real*c2.imag + imag*c2.real)/(c2.real*c2.real + c2.imag*c2.imag);

return c;
}

ostream&operator << (ostream& output,Complex&c)
{
output<<"("<<c.real;
if(c.imag>=0)output<<"+";
output<<c.imag<<"i)"<<endl;
return output;
}
istream&operator >> (istream& input,Complex&c)
{
cout<<"请输入复数的实部和虚部：";
input>>c.real>>c.imag;
return input;
}
int main()
{
Complex c1, c2, c3;

cin>>c1>>c2;
cout<<"c1="<<c1;
cout<<"c2="<<c2;

c3 = c1 + c2;
cout<<"c1+c2="<<c3;

c3 = c1 - c2;
cout<<"c1-c2="<<c3;

c3 = c1 * c2;
cout<<"c1*c2="<<c3;

c3 = c1 / c2;
cout<<"c1/c2="<<c3;

system("pause");
return 0;
}