第九周任务一

一时失言乱红尘 2022-06-13 12:19 208阅读 0赞

/* 
    实验内容:定义Complex类中的<<和>>运算符的重载，实现输入和输出。 
    * 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： 定义Complex类中的<<和>>运算符的重载，实现输入和输出                             
    * 作    者：  薛广晨                             
    * 完成日期：  2012       年  4    月  14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】接第8周任务1，定义Complex类中的<<和>>运算符的重载，实现输入和输出，改造原程序中对运算结果显示方式，使程序读起来更自然。
    
    #include <iostream>
    
    using namespace std;
    
    class Complex
    {
    public:
    	Complex(){real = 0; imag = 0;}
    	Complex(double r){real = r;imag = 0;}//类型转换函数
    	
    	Complex(double r,double i){real = r; imag = i;}
    
    	friend ostream& operator << (ostream &,Complex &);
    	friend istream& operator >> (istream &,Complex &);
    
    	friend Complex operator+ (Complex c1,Complex c2);
    	friend Complex operator- (Complex c1, Complex c2);
    	friend Complex operator- (Complex &c);
    	friend Complex operator* (Complex c1, Complex c2);
    	friend Complex operator/ (Complex c1, Complex c2);
    private:
    	double real;
    	double imag;
    };
    //下面定义成员函数
    ostream& operator << (ostream &ouput,Complex &c)
    {
    	ouput << "(" << c.real;
    	if(c.imag >= 0)ouput << "+";
    	ouput << c.imag << "i)" << endl;
    	return ouput;
    }
    
    istream& operator >> (istream &input, Complex &c)
    {
    	char c1;
    	cout << "input real part and imaginary part of complex number:";
    	input >> c.real >> c.imag >> c1;
    	return input;
    }
    
    Complex operator + (Complex c1, Complex c2)
    {return Complex(c1.real + c2.real, c1.imag + c2.imag);}
    
    Complex operator - (Complex c1, Complex c2)
    {return Complex(c1.real - c2.real, c1.imag - c2.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 / (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));}
    
    int main()
    {
    	double d = 2.5;
    	Complex c1, c2, c3,c4;
    	cin >> c1;
    	cout << "请再输入一个复数：" << endl;
    	cin >> c2;
    
    	cout << "c1 = " << c1;
    	cout << "c2 = " << c2;
    
    	c3 = c1 + c2;
    	cout << "c1 + c2 = " << c3;
    
    	c3 = c1 + d;
    	cout << "c1 + " << d << "= " << c3;
    
    	c3 = Complex(d) + c1;
    	cout << d << " + c1" << "= " << c3;
    
    	c3 = c1 - c2;
    	cout << "c1 - c2 = " << c3;
    
    	c3 = c1 - d;
    	cout << "c1 - " << d << "= " << c3;
    
    	c3 = d - c1;
    	cout << d << " - c1" << "= " << c3;
    
    	c3 = c1 * c2;
    	cout << "c1 * c2 = " << c3;
    
    	c3 = c1 * d;
    	cout << "c1 * " << d << "= " << c3;
    
        c3 = d * c1;
    	cout << d << " * c1" << "= " << c3;
    
    	c3 = c1 / c2;
    	cout << "c1 / c2 = " << c3;
    
    	c3 = c1 / d;
    	cout << "c1 / " << d << "= " << c3;
    
    	c3 = d / c1;
    	cout << d << " / c1" << "= " << c3;
    
    	c3 = - c1;
    	cout << " -c1= " << c3;
    
    	system("pause");
    	return 0;
    }

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上机感言：定义Complex类中的<<和>>运算符的重载，实现输入和输出，使程序简单，可读性强

[1334401637_9205.jpg]: https://img-my.csdn.net/uploads/201204/14/1334401637_9205.jpg