第十二周上机实践——项目1-实现复数类中的运算符重载-（3）

来源：互联网发布：音乐可视化软件编辑：程序博客网时间：2024/05/17 22:15
/* *Copyright (c)2016,烟台大学计算机与控制工程学院 *All rights reserved. *文件名称：main.cpp *作    者：郭永恒 *完成日期：2016年5月18日 *版 本 号：v1.0 * *问题描述： 定义一个定义完整的类（是可以当作独立的产品发布，成为众多项目中的“基础工程”）。 *这样的类在(2)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相加”，其他-、*、/运算符类似。 */#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 &c1, const Complex &c2);    friend Complex operator-(const Complex &c1, const Complex &c2);    friend Complex operator*(const Complex &c1, const Complex &c2);    friend Complex operator/(const Complex &c1, const Complex &c2);    friend Complex operator+(const Complex &c, const double d);    friend Complex operator-(const Complex &c, const double d);    friend Complex operator*(const Complex &c, const double d);    friend Complex operator/(const Complex &c, const double d);    friend Complex operator+(const double d, const Complex &c);    friend Complex operator-(const double d, const Complex &c);    friend Complex operator*(const double d, const Complex &c);    friend Complex operator/(const double d, const Complex &c);    void display();private:    double real;    double imag;};Complex operator+(const double d, const Complex &c){    Complex temp;    temp = c;    temp.real += d;    return temp;}Complex operator-(const double d, const Complex &c){    Complex temp;    temp.real = d - c.real;    temp.imag = -c.imag;    return temp;}Complex operator*(const double d, const Complex &c){    Complex temp;    temp.real = c.real * d;    temp.imag = c.imag * d;    return temp;}Complex operator/(const double d, const Complex &c)/*****/{    Complex temp;    temp.real = (d * c.real) / (c.real * c.real + c.imag * c.imag);    temp.imag = (-d * c.imag)/ (c.real * c.real + c.imag * c.imag);    return temp;}Complex operator+(const Complex &c, const double d){    Complex temp;    temp = c;    temp.real += d;    return temp;}Complex operator-(const Complex &c, const double d){    Complex temp;    temp = c;    temp.real -= d;    return temp;}Complex operator*(const Complex &c, const double d){    Complex temp;    temp.real = c.real * d;    temp.imag = c.imag * d;    return temp;}Complex operator/(const Complex &c, const double d)/******/{    Complex temp;    temp.real = c.real / d;    temp.imag = c.imag / d;    return temp;}Complex operator+(const Complex &c1, const Complex &c2){    Complex temp;    temp.real = c1.real + c2.real;    temp.imag = c1.imag + c2.imag;    return temp;}Complex operator-(const Complex &c1, const Complex &c2){    Complex temp;    temp.real = c1.real - c2.real;    temp.imag = c1.imag - c2.imag;    return temp;}Complex operator*(const Complex &c1, const Complex &c2){    Complex temp;    temp.real = c1.real*c2.real - c1.imag*c2.imag;    temp.imag = c1.imag*c2.real + c1.real*c2.imag;    return temp;}Complex operator/(const Complex &c1, const Complex &c2){    Complex temp;    temp.real = (c1.real*c2.real + c1.imag*c2.imag)/(c2.real*c2.real + c2.imag*c2.imag);    temp.imag = (c1.imag*c2.real - c1.real*c2.imag)/(c2.real*c2.real + c2.imag*c2.imag);    return temp;}void Complex::display(){    cout << real;    if(imag > 0)        cout << "+" << imag << "i" << endl;    if(imag < 0)        cout << 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();//}int main(){    Complex c1(3,4),c2(5,-10),c3;    double d=11;    cout<<"c1=";    c1.display();    cout<<"c2=";    c2.display();    cout<<"d="<<d<<endl<<endl;    cout<<" 下面是重载运算符的计算结果: "<<endl;    c3=c1+c2;    cout<<"c1+c2=";    c3.display();    cout<<"c1+d=";    (c1+d).display();    cout<<"d+c1=";    (d+c1).display();    c3=c1-c2;    cout<<"c1-c2=";    c3.display();    cout<<"c1-d=";    (c1-d).display();    cout<<"d-c1=";    (d-c1).display();    c3=c1*c2;    cout<<"c1*c2=";    c3.display();    cout<<"c1*d=";    (c1*d).display();    cout<<"d*c1=";    (d*c1).display();    c3=c1/c2;    cout<<"c1/c2=";    c3.display();    cout<<"c1/d=";    (c1/d).display();    cout<<"d/c1=";    (d/c1).display();    return 0;}
运行结果：
0 0