学步园

/* 
* 程序的版权和版本声明部分 
* Copyright (c)2013, 烟台大学计算机学院学生 
* All rightsreserved. 
* 文件名称：score.cpp 
* 作    者：   杨晨 
* 完成日期： 2013 年 4月  19日 
* 版本号： v1.0 
* 输入描述：
* 问题描述：
* 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+(double c1,Complex &c2);
friend Complex operator-(double c1,Complex &c2);
friend Complex operator*(double c1,Complex &c2);
friend Complex operator/(double c1,Complex &c2);
void display();
private:
	double real;
	double imag;
};
Complex operator +(double c1,Complex &c2)
{
  return Complex(c1+c2.real,c2.imag);
}
Complex operator -(double c1,Complex &c2)
{
   return Complex(c1-c2.real,c2.imag);
}
Complex operator *(double c1,Complex &c2)
{
   return Complex(c1*c2.real,c2.imag);
}
Complex operator /(double c1,Complex &c2)
{
  return Complex(c1/c2.real,c2.imag);
}
void Complex::display()
{
	cout<<"("<<real<<","<<imag<<"i"<<")"<<endl;
}
int main()
{
	Complex c1,c2(5,-10),c3;
	cout<<"c1=";
	c1.display();
	cout<<"c2=";
	c2.display();
	c3=1.3+c2;
	cout<<"c1+c2=";
	c3.display();
	c3=2.4-c2;
	cout<<"c1-c2=";
	c3.display();
	c3=1.5*c2;
	cout<<"c1*c2=";
	c3.display();
	c3=10.0/c2;
	cout<<"c1/c2=";
	c3.display();
	return 0;
}