第八周项目 1 复数类中的运算符重载（续）

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/** Copyright (c) 2015, 烟台大学计算机学院* All rights reserved.* 文件名称：main.cpp* 作    者 ：韩娟* 完成日期 ：2015年5月19日* 版 本 号 ：v1.0** 问题描述 ：在复数类中的运算符重载基础上（1）再定义一目运算符 -，-c相当于0-c。（2）定义Complex类中的<<和>>运算符的重载，实现输入和输出，改造原程序中对运算结果显示方式，使程序读起来更自然。* 输入描述 : 略* 程序输出 ：按要求输出*/#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 &c1,Complex &c2);    friend Complex operator-(Complex &c1,Complex &c2);    friend Complex operator*(Complex &c1,Complex &c2);    friend Complex operator/(Complex &c1,Complex &c2);    friend Complex operator+(Complex &c1,double d2);    friend Complex operator+(double d1,Complex &c2);    friend Complex operator-(Complex &c1,double d2);    friend Complex operator-(double d1,Complex &c2);    friend Complex operator*(Complex &c1,double d2);    friend Complex operator*(double d1,Complex &c2);    friend Complex operator/(Complex &c1,double d2);    friend Complex operator/(double d1,Complex &c2);    friend ostream& operator << (ostream&output,const Complex&c);    friend istream& operator >> (istream&input,Complex&c);    Complex operator-();private:    double real;    double imag;};//下面定义成员函数Complex operator+(Complex &c1,Complex &c2){    Complex c;    c.real=c1.real+c2.real;    c.imag=c1.imag+c2.imag;    return c;}Complex operator-(Complex &c1,Complex &c2){    Complex c;    c.real=c1.real-c2.real;    c.imag=c1.imag-c2.imag;    return c;}Complex operator*(Complex &c1,Complex &c2){    Complex c;    c.real=c1.real*c2.real-c1.imag*c2.imag;    c.imag=c1.imag*c2.real+c1.real*c2.imag;    return c;}Complex operator/(Complex &c1,Complex &c2){    Complex c;    c.real=(c1.real*c2.real+c1.imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);    c.imag=(c1.imag*c2.real-c1.real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);    return c;}Complex operator+(Complex &c1,double d2){    Complex c;    c.real=c1.real+d2;    c.imag=c1.imag;    return c;}Complex operator+(double d1,Complex &c2){    Complex c;    c.real=c2.real+d1;    c.imag=c2.imag;    return c;}Complex operator-(Complex &c1,double d2){    Complex c;    c.real=c1.real-d2;    c.imag=c1.imag;    return c;}Complex operator-(double d1,Complex &c2){    Complex c;    c.real=c2.real-d1;    c.imag=c2.imag;    return c;}Complex operator*(Complex &c1,double d2){    Complex c(d2,0);    return c1*c;}Complex operator*(double d1,Complex &c2){    Complex c(d1,0);    return c*c2;}Complex operator/(Complex &c1,double d2){    Complex c(d2,0);    return c1/c;}Complex operator/(double d1,Complex &c2){    Complex c(d1,0);    return c/c2;}ostream& operator << (ostream&output,const Complex&c){    output<<"("<<c.real;    if(c.imag>=0) output<<"+";    output<<c.imag<<"i)";    return output;}istream& operator >> (istream&input,Complex&c){    input>>c.real>>c.imag;    return input;}Complex Complex::operator-(){    Complex c;    c.real=-real;    c.imag=-imag;    return c;}//下面定义用于测试的main()函数int main(){    Complex c1,c2,c3;    cout<<"请分别输入负数的实部和虚部（如：6 3）：";    cin>>c1>>c2;    double d=11;    cout<<"c1="<<c1<<endl;;    cout<<"c2="<<c2<<endl;    cout<<"d="<<d<<endl<<endl;    cout<<"下面是重载运算符的计算结果: "<<endl;    c3=c1+c2;    cout<<"c1+c2="<<c3<<endl;    c3=c1+d;    cout<<"c1+d="<<c3<<endl;    c3=d+c1;    cout<<"d+c1="<<c3<<endl;    c3=c1-c2;    cout<<"c1-c2="<<c3<<endl;    c3=c1-d;    cout<<"c1-d="<<c3<<endl;    c3=d-c1;    cout<<"d-c1="<<c3<<endl;    c3=c1*c2;    cout<<"c1*c2="<<c3<<endl;    c3=c1*d;    cout<<"c1*d="<<c3<<endl;    c3=d*c1;    cout<<"d*c1="<<c3<<endl;    c3=c1/c2;    cout<<"c1/c2="<<c3<<endl;    c3=c1/d;    cout<<"c1/d="<<c3<<endl;    c3=d/c1;    cout<<"d/c1="<<c3<<endl;    c3=-c1;    cout<<"-c1="<<c3<<endl;    return 0;}
知识点总结：
这个主要是在原来的基础上加上了输入输出和一些单目的运算，还好。
学习心得：
其实现在学的很有用。
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