实现复数类中的运算符重载

 
/* (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：                              
* 作    者：           苗影                   
* 完成日期：       2012  年   4    月  9      日
* 版 本 号：          

* 对任务及求解方法的描述部分
* 输入描述： 
* 问题描述： 
* 程序输出： 
* 程序头部的注释结束
*/

 

#include<iostream>
using namespace std;
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);
	void display();
private:
	double real;
	double imag;
};
//下面定义成员函数
Complex  Complex ::operator+(Complex &c2)
{
	Complex c;
	c.real=real+c2.real;
	c.imag=imag+c2.imag;
	return  c;
}

Complex  Complex ::operator-(Complex &c2)
{
	Complex c;
	c.real=real-c2.real;
	c.imag=imag-c2.imag;
	return  c;
}

Complex  Complex ::operator*(Complex &c2)
{
	  Complex c;
  	c.real=real*c2.real-imag*c2.imag;  
    c.imag=imag*c2.real+c2.imag*real;
	  return  c;
}

Complex  Complex ::operator/(Complex &c2)
{
	  Complex c;
	  
   	c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);  
    c.imag=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);  

	  return  c;
}
void Complex::display( )    
{  
    cout<<"("<<real<<","<<imag<<"i)"<<endl;  
}  
   
int main()
{
	Complex c1(3,4),c2(5,-10),c3;
	cout<<"c1=";
	c1.display();
	cout<<"c2=";
	c2.display();
	c3=c1+c2;
	cout<<"c1+c2=";
	c3.display();
	c3=c1-c2;
	cout<<"c1-c2=";
	c3.display();
	c3=c1*c2;
	cout<<"c1*c2=";
	c3.display();
	c3=c1/c2;
	cout<<"c1/c2=";
	c3.display();
	system("pause");
	return 0;
}
#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 &c2,Complex &c1);
	friend Complex operator-(Complex &c2,Complex &c1);
	friend  Complex operator*(Complex &c2,Complex &c1);
	friend  Complex operator/(Complex &c2,Complex &c1);
	void display();
private:
	double real;
	double imag;
};
//下面定义成员函数
Complex operator+(Complex &c2,Complex &c1)
{
	Complex c;
	c.real=c1.real+c2.real;
	c.imag=c1.imag+c2.imag;
	return  c;
}

Complex operator-(Complex &c2,Complex &c1)
{
	Complex c;
	c.real=c1.real-c2.real;
	c.imag=c1.imag-c2.imag;
	return  c;
}

Complex operator*(Complex &c2,Complex &c1)
{
	  Complex c;
	  c.real=c1.real*c2.real-c1.imag*c2.imag;  
    c.imag=c1.imag*c2.real+c2.imag*c1.real;
	  return  c;
}

Complex operator/(Complex &c2,Complex &c1)
{
	  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;
}
void Complex::display( )    
{  
    cout<<"("<<real<<","<<imag<<"i)"<<endl;  
}  
   
int main()
{
	Complex c1(3,4),c2(5,-10),c3;
	cout<<"c1=";
	c1.display();
	cout<<"c2=";
	c2.display();
	c3=c1+c2;
	cout<<"c1+c2=";
	c3.display();
	c3=c1-c2;
	cout<<"c1-c2=";
	c3.display();
	c3=c1*c2;
	cout<<"c1*c2=";
	c3.display();
	c3=c1/c2;
	cout<<"c1/c2=";
	c3.display();
	system("pause");
	return 0;
}

#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 &c2,double d);
	friend Complex operator-(Complex &c2,double d);
	friend  Complex operator*(Complex &c2,double d);
 	friend  Complex operator/(Complex &c2,double d);
  friend  Complex operator-(Complex &c2);	 
	void display();
private:
	double real;
	double imag;
};
//下面定义成员函数
Complex operator+(Complex &c2,double d)
{
	Complex c;
	c.real=c2.real+d;
	c.imag=c2.imag;
	return  c;
}

Complex operator-(Complex &c2,double d)
{
	Complex c;
	c.real=c2.real-d;
	c.imag=c2.imag;
	return  c;
}

Complex operator*(Complex &c2,double d)
{
	  Complex c;
	  c.real=c2.real*d;  
    c.imag=c2.imag;
	  return  c;
}

Complex operator/(Complex &c2,double d)
{
	  Complex c;
	  
	  c.real=c2.real/d;  
    c.imag=c2.imag;  

	  return  c;
}
Complex operator-(Complex &c2)
{
	return Complex(0-c2.real,0-c2.imag);
}
void Complex::display( )    
{  
    cout<<"("<<real<<","<<imag<<"i)"<<endl;  
}  
   
int main()
{
	Complex c2(3,4),c3;double d=2;
	cout<<"c1=";
	c2.display();
	c3=c2+d;
	cout<<"c2+d=";
	c3.display();
	c3=c2-d;
	cout<<"c2-d=";
	c3.display();
	c3=c2*d;
	cout<<"c2*d=";
	c3.display();
	c3=c2/d;
	cout<<"c2/d=";
	c3.display();
	system("pause");
	return 0;
}

 

感言：真长，但还不算太难！！