第12周项目1-实现复数类中的运算符重载2

淡淡的烟草味﹌ 2021-06-10 20:41 295阅读 0赞

问题及代码：

/*copyright(c)2016.烟台大学计算机学院
     * All rights reserved,
     * 文件名称：text.Cpp
     * 作者：李一波
     * 完成日期：2016年5月17日
     * 版本号：vc++6.0
     *
     * 问题描述:  请用类的成员函数，定义复数类重载运算符+、-、*、/，使之能用于复数的加减乘除
     * 输入描述:
     * 程序输出：
     */
    
    #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+(const Complex &c3,const Complex &c2);
        friend Complex operator-(const Complex &c3,const Complex &c2);
        friend Complex operator*(const Complex &c3,const Complex &c2);
        friend Complex operator/(const Complex &c3,const Complex &c2);
        void display();
    private:
        double real;
        double imag;
    };
    //下面定义成员函数
    Complex operator+(const Complex &c3,const Complex &c2)
    {
        Complex c;
        c.real=c3.real+c2.real;
        c.imag=c3.imag+c2.imag;
        return c;
    }
    Complex operator-(const Complex &c3,const Complex &c2)
    {
        Complex c;
        c.real=c3.real-c2.real;
        c.imag=c3.imag-c2.imag;
        return c;
    }
    Complex operator*(const Complex &c3,const Complex &c2)
    {
        Complex c;
        c.real=c3.real*c2.real-c3.imag*c2.imag;
        c.imag=c3.real*c2.imag+c3.imag*c2.real;
        return c;
    }
    Complex operator/(const Complex &c3,const Complex &c2)
    {
        Complex c;
        c.real=(c3.real*c2.real+c3.imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
        c.imag=(c3.imag*c2.real-c3.real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
    
        return c;
    }
    void Complex::display()
    {
        cout<<"("<<real<<","<<imag<<")"<<endl;
    }
    //下面定义用于测试的main()函数
    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();
        return 0;
    }

运行结果：

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[Center]: /images/20210607/904e20848655448189dff58586cc6fdf.png