第八周任务一

小灰灰 2022-06-13 10:19 266阅读 0赞

/* 
    实验内容:实现复数类中的运算符重载定义一个复数类重载运算符+、-、*、/，使之能用于复数的加减乘除。 
    * 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： 实现复数类中的运算符重载                             
    * 作    者：  薛广晨                             
    * 完成日期：  2012       年  4    月  7      日  
    * 版 本号：  x1.0         
      
    * 对任务及求解方法的描述部分  
    * 输入描述：
    
    * 程序头部的注释结束（此处也删除了斜杠）  
    */
    /*【任务1】实现复数类中的运算符重载定义一个复数类重载运算符+、-、*、/，使之能用于复数的加减乘除。
    （2）方案二：请用类的友元函数，而不是成员函数，完成上面提及的运算符的重载；
    （3）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，定义一目运算符-，-c相当于0-c。；*/
    #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+ (const double &d, Complex &c);
        friend Complex operator+ (Complex &c, const double &d);
    
    	friend Complex operator- (Complex &c1, Complex &c2);
        friend Complex operator- (const double &d, Complex &c);
        friend Complex operator- (Complex &c, const double &d);
    
    	friend Complex operator- (Complex &c);
    
    	friend Complex operator* (Complex &c1, Complex &c2);
        friend Complex operator* (const double &d, Complex &c);
        friend Complex operator* (Complex &c, const double &d);
    
    	friend Complex operator/ (Complex &c1, Complex &c2);
        friend Complex operator/ (const double &d, Complex &c);
        friend Complex operator/ (Complex &c, const double &d);
    
    	void display();
    private:
    	double real;
    	double imag;
    };
    //下面定义成员函数
    void Complex :: display( )    
    {  
        cout<<"("<<real<<","<<imag<<"i)"<<endl;  
    }  
    
    Complex operator + (Complex &c1, Complex &c2)
    {return Complex(c1.real + c2.real, c1.imag + c2.imag);}
    
    class Complex;
    Complex operator + (const double &d, Complex &c)
    { return Complex(d + c.real, c.imag);}
    
    Complex operator + (Complex &c, const double &d)
    { return Complex(c.real + d, c.imag);}
    
    Complex operator - (Complex &c1, Complex &c2)
    {return Complex(c1.real - c2.real, c1.imag - c2.imag);}
    
    class Complex;
    Complex operator - (const double &d, Complex &c)
    { return Complex(d - c.real, -c.imag);}
    
    Complex operator - (Complex &c, const double &d)
    { return Complex(c.real - d, c.imag);}
    
    Complex operator - (Complex &c)
    { return Complex(-c.real, -c.imag);}
    
    Complex operator * (Complex &c1, Complex &c2)
    {return Complex(c1.real * c2.real - c1.imag * c2.imag, c1.imag * c2.real + c1.real * c2.imag);}
    
    Complex operator * (const double &d, Complex &c)
    { return Complex(d * c.real, d * c.imag);}
    
    Complex operator * (Complex &c, const double &d)
    { return Complex(c.real * d, c.imag * d);}
    
    Complex operator / (Complex &c1, Complex &c2)
    {return Complex((c1.real * c2.real + c1.imag * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag), (c1.imag * c2.real - c1.real * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag));}
    
    Complex operator / (Complex &c, const double &d)
    { return Complex(d / c.real, d / c.imag);}
    
    Complex operator / (const 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));}
    
    int main()
    {
    	const double d = 2;
    	Complex c1(3,4),c2(5,-10),c3,c4;
    	cout << "c1=";
    	c1.display();
    
    	cout << "c2=";
    	c2.display();
    
    	c3 = c1 + c2;
    	cout << "c1+c2=";
    	c3.display();
    
    	c3 = c1 + 2;
    	cout << "c1+2=";
    	c3.display();
    
    	c3 = 2 + c1;
    	cout << "2+c1=";
    	c3.display();
    
    	c3 = c1 - c2;
    	cout << "c1-c2=";
    	c3.display();
    
    	c3 = c1 - 2;
    	cout << "c1-2=";
    	c3.display();
    
    	c3 = 2 - c1;
    	cout << "2-c1=";
    	c3.display();
    
    	c3 = c1 * c2;
    	cout << "c1*c2=";
    	c3.display();
    
    	c3 = c1 * 2;
    	cout << "c1*2=";
    	c3.display();
    
    	c3 = 2 * c1;
    	cout << "2*c1=";
    	c3.display();
    
    	c3 = c1 / c2;
    	cout << "c1/c2=";
    	c3.display();
    
    	c3 = c1 / 2;
    	cout << "c1/2=";
    	c3.display();
    
    	c3 = 2 / c1;
    	cout << "2/c1=";
    	c3.display();
    
    	c3 = - c1;
    	cout << "-c1=";
    	c3.display();
    
    	system("pause");
    	return 0;
    }

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上机感言：这个更加完善，能实现更多的功能

[1333799788_6536.jpg]: https://img-my.csdn.net/uploads/201204/07/1333799788_6536.jpg