第九周任务一

/*(文件注释头部开始）
*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：刘杨
*完成日期：2012 年 4 月 16 日
*版本号：vc
* 对任务及求解方法的描述部分
* 输入描术：
* 问题描述：定义Complex类中的《和》运算符重载，实现输入和输出
* 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;}
Complex operator + (Complex &c2);
Complex operator - (Complex &c2);
Complex operator * (Complex &c2);
Complex operator / (Complex &c2);
friend ostream& operator << (ostream&, Complex &c2);
friend istream& operator >> (istream&, Complex &c2);

private:

double real;
double imag;
};
//下面定义成员函数
Complex Complex::operator + (Complex &c2)
{
return Complex(real + c2.real,imag + c2.imag);
}
Complex Complex::operator - (Complex &c2)
{
return Complex(real - c2.real,imag - c2.imag);
}
Complex Complex::operator * (Complex &c2)
{
return Complex(real * c2.real - imag * c2.imag, imag * c2.real + real * c2.imag);
}
Complex Complex::operator / (Complex &c2)
{
return Complex((real * c2.real + imag * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag),(imag * c2.real - real * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag));
}
ostream& operator << (ostream& output, Complex &c2)
{
if(c2.imag > 0)
{
output << "(" << c2.real << "+" << c2.imag << "i)" << endl;
}

output << "(" << c2.real << c2.imag << "i)" << endl;

return output;
}
istream& operator >> (istream& input, Complex &c2)
{
cout << "输入复数的实部与虚部：";

input >> c2.real >> c2.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;
}

运行结果：