[置顶] 8-1——复数类运算符的重载 double数据与复数之间的运算 任务三

/*
*【项目1】实现复数类中的运算符重载
* 程序的版权和版本声明部分
* Copyright (c)2012, 烟台大学计算机学院学生
* All rightsreserved.
* 文件名称： object.cpp
* 攻城菜鸟：蛋蛋
* 完成日期： 2013年  4 月  18 日
* 版本号： v1.0
* 输入描述：两个复数的真部和虚部
* 问题描述：方案三：在方案二的基础上，扩展+、-、*、/运算符的功能，使之能与double型数据进行运算。设Complex c; double d; c?d和d?c的结果为“将d视为实部为d的复数同c运算”的结果（其中?为+、-、*、/之一）。另外，再定义一目运算符 -，-c相当于0-c。
* 程序输出：使用运算符运算的结果
*/
#include <iostream>

using std::cout;
using std::endl;

class Complex
{public:
    Complex(){real=0;imag=0;}
    Complex(double r,double i){real=r;imag=i;}
    friend Complex operator+(double &d,Complex &c2);
    friend Complex operator-(double &d,Complex &c2);
    friend Complex operator*(double &d,Complex &c2);
    friend Complex operator/(double &d,Complex &c2);
    friend Complex operator+(Complex &c,double &d);
    friend Complex operator-(Complex &c,double &d);
    friend Complex operator*(Complex &c,double &d);
    friend Complex operator/(Complex &c,double &d);
    friend Complex operator-(Complex &c);
    void display();
 private:
    double real;
    double imag;
};
//下面定义成员函数
Complex operator+(double &d,Complex &c){
	 return Complex(d+c.real,c.imag);
}
Complex operator-(double &d,Complex &c){
  return Complex(d-c.real,c.imag);
 }
Complex operator*(double &d,Complex &c){
    return Complex(d*c.real,d*c.imag);
 }
Complex operator/(double &d,Complex &c){
    return Complex(d*c.real/(c.real*c.real+c.imag*c.imag),-d*c.imag/(c.real*c.real+c.imag*c.imag));
 }
Complex operator-(Complex &c){
return Complex(0-c.real,0-c.imag);
}
Complex operator+(Complex &c,double &d){
	 return Complex(c.real+d,c.imag);
}
Complex operator-(Complex &c,double &d){
	 return Complex(c.real-d,c.imag);
}
Complex operator*(Complex &c,double &d){
	 return Complex(c.real*d,c.imag*d);
}
Complex operator/(Complex &c,double &d){
	 return Complex(c.real/d,c.imag/d);
}
void Complex::display(){
cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
//下面是测试函数
int main()
{
    double d=3.14;
	Complex c(5,-10),c3;
    cout<<"d="<<d<<endl;;
    cout<<"c=";
    c.display();
    c3=d+c;
    cout<<"d+c=";
    c3.display();
    c3=d-c;
    cout<<"d-c=";
    c3.display();
    c3=d*c;
    cout<<"d*c=";
    c3.display();
    c3=d/c;
    cout<<"d/c=";
    c3.display();
    c3=c+d;
    cout<<"c+d=";
    c3.display();
    c3=c-d;
    cout<<"c-d=";
    c3.display();
    c3=c*d;
    cout<<"c*d=";
    c3.display();
    c3=c/d;
    cout<<"c/d=";
    c3.display();
    c3=-c;
    cout<<"-c=";
    c3.display();
return 0;
}