第九周实验报告2.0

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/* (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：212
* 作    者：任小宁
* 完成日期： 2012   年   4   月    16 日
* 版本号：201158504431
* 对任务及求解方法的描述部分
* 输入描述：

#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);     //此处有危险未排除：除法溢出        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;  }

* 问题描述：定义Time类中的《和》运算符重载，总体上感觉比第8周的代码好看了很多也省去了很多不必要的麻烦