项目1-3 定义一个定义完整的类。这样的类在(2)的基础上，扩展+、-、*、/运算符的功能，使之能与double型数据进行运算。设Complex c; d

/*

*Copyright (c) 2016,烟台大学计算机学院

*All rights reserved.

*文件名称：main.cpp

*作 者：李磊涛

*完成时间：2016年5月22日

*版 本 号：v1.0

*

*问题描述：项目1-3 定义一个定义完整的类。这样的类在(2)的基础上，扩展+、-、*、/运算符的功能，使之能与double型数据进行运算。设Complex c; d。

*输入描述：无。

*程序输出：两个数的算法公式及结果。

*/

#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+(double b, Complex &c2);

friend Complex operator+(Complex &c1,double b);

friend Complex operator-(Complex &c1, Complex &c2);

friend Complex operator-(double b, Complex &c2);

friend Complex operator-(Complex &c1,double b);

friend Complex operator*(Complex &c1, Complex &c2);

friend Complex operator*(double b, Complex &c2);

friend Complex operator*(Complex &c1,double b);

friend Complex operator/(Complex &c1, Complex &c2);

friend Complex operator/(double b, Complex &c2);

friend Complex operator/(Complex &c1,double b);

void display();

private:

double real;

double imag;

};

Complex operator+(Complex &c1, Complex &c2)

{

Complex c;

c.real=c1.real+c2.real;

c.imag=c1.imag+c2.imag;

return c;

}

Complex operator+(double b, Complex &c2)

{

Complex c;

c.real=b+c2.real;

c.imag=0+c2.imag;

return c;

}

Complex operator+(Complex &c1,double b)

{

Complex c;

c.real=c1.real+b;

c.imag=c1.imag+0;

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-(double b, Complex &c2)

{

Complex c(b,0);

return c-c2;

}

Complex operator-(Complex &c1,double b)

{

Complex c(b,0);

return c1-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*(double b, Complex &c2)

{

Complex c(b,0);

return c*c2;

}

Complex operator*(Complex &c1,double b)

{

Complex c(b,0);

return c1*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/(double b, Complex &c2)

{

Complex c(b,0);

return c/c2;

}

Complex operator/(Complex &c1,double b)

{

Complex c(b,0);

return c1/c;

}

void Complex::display()

{

cout<<"("<<real<<","<<imag<<"i)"<<endl;

}

int main()

{

Complex c1(3,4),c2(5,-10),c3;

double d=11;

cout<<"c1=";

c1.display();

cout<<"c2=";

c2.display();

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.display();

cout<<"c1+d=";

(c1+d).display();

cout<<"d+c1=";

(d+c1).display();

c3=c1-c2;

cout<<"c1-c2=";

c3.display();

cout<<"c1-d=";

(c1-d).display();

cout<<"d-c1=";

(d-c1).display();

c3=c1*c2;

cout<<"c1*c2=";

c3.display();

cout<<"c1*d=";

(c1*d).display();

cout<<"d*c1=";

(d*c1).display();

c3=c1/c2;

cout<<"c1/c2=";

c3.display();

cout<<"c1/d=";

(c1/d).display();

cout<<"d/c1=";

(d/c1).display();

return 0;

}