第八周任务一

/* (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：刘杨 
* 完成日期： 2012 年 4 月 9 日
* 版 本 号： v.04091 
* 对任务及求解方法的描述部分 
* 问题描述：
* 程序头部的注释结束
*/

（一）

#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 c1;
	c1.real=real+c2.real;
	c1.imag=imag+c2.imag;
	return c1;
}
	Complex Complex::operator-(Complex &c2)
	{
		Complex c1;
	c1.real=real-c2.real;
	c1.imag=imag-c2.imag;
	return c1;

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

（二）

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

运行结果：

（三）
#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 d);
	friend Complex operator-(Complex c1,double d);
	friend Complex operator*(Complex c1,double d);
	friend Complex operator/(Complex c1,double d);
    friend Complex operator-(Complex c1);
	void display();
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.real*c2.imag+c1.imag*c2.real; 
        return c;  
	}
	Complex operator/(Complex c1,Complex &c2)
	{
         Complex c;  
        c.real=(c1.real*(c2.real)+c1.imag*c2.imag)/((c2.imag*c2.imag)+c1.real*c1.real);  
        c.imag=(c1.imag*c2.real-c1.real*c2.imag)/((c2.imag*c2.imag)+c1.real*c1.real);   
        return c;  
	}

Complex operator+(Complex c1,double d)
{
	Complex c;
	c.real=c1.real+d;
	c.imag=c1.imag;
	return c;
}
	Complex operator-(Complex c1,double d)
	{
		Complex c;
	c.real=c1.real-d;
	c.imag=c1.imag;
	return c;
        }
	Complex operator*(Complex c1,double d)
	{
        Complex c;  
        c.real=c1.real*d;  
        c.imag=c1.imag*d;  
        return c;  
	}
	Complex operator/(Complex c1,double d)
	{
         Complex c;  
        c.real=c1.real/d;  
        c.imag=c1.imag/d;  
        return c;  
	}
	void Complex::display()
	{
      cout<<"("<<real<<","<<imag<<"i)"<<endl;  
	}

 Complex operator-(Complex c1)
{
	Complex c;
	c.real=-c1.real;
	c.imag=-c1.imag;
	return c;
}
int main()
{
	Complex c1(3,4),c2(5,-10),c3;
	double d=5.1;

	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();

	c3=c1+d;
    cout<<"c1+d=";
	c3.display();
	
    c3=c1-d;
    cout<<"c1-d=";
	c3.display();

   c3=c1*d;
    cout<<"c1*d=";
	c3.display();

    c3=c1/d;
    cout<<"c1/d=";
	c3.display();

	c3=-c1;
    cout<<"-c1=";
	c3.display();

	system("pause");
	return 0;
}


运行结果：