面向对象复数类（class Complex) 的重载运算符 一元二元的实现与使用



面向对象复数类（class Complex)

一.

     实现与测试使用总共分为两个部分_(:зゝ∠)_，头文件与主函数 ，重载操作符与类成员函数有注释声明

      唯一的注意点在于一元加法操作符返回的是类引用 而二元加法操作符返回的是类对象

      其中二元加法操作符重载了三种参数情况

      运算部分用到了友元函数

      主函数测试部分自行按需要去掉注释

      仅供参考，随意浏览_(:зゝ∠)_

      近期补完完整版复数类 重载运算符与成员函数

头文件实现部分：

#ifndef _Complex_#define _Complex_#include <cmath>#include <iostream>using namespace std;#include <cstring>#endif//_Complex_class Complex;Complex& _doapl (Complex *,Complex&);Complex& _doapl (Complex *,Complex&);class Complex {public:Complex (double tr=0,double ti=0){re=tr;im=ti;} Complex& operator *= ( const Complex &); Complex& operator += ( const Complex &); void   Put () {cout<<re<<"+"<<im<<"i"<<endl;} void   Set (double ,double); double real() const  { return re;} double imag() const  { return im;}  ~Complex() { cout<<"Destroying class Complex"<<endl; }private:double re;double im;friend Complex& _doapl (Complex*,const Complex& r ); friend Complex& _doamu (Complex*,const Complex& r );};//  Setinline voidComplex::Set(double tr,double ti){re=tr;im=ti;}// friend functioninline Complex&_doapl (Complex* ths, const Complex& r){  ths->re += r.re;  ths->im += r.im;  return *ths;}inline Complex&_doamu (Complex* ths, const Complex& r){Complex* t;t=new Complex;t->re=ths->re;t->im=ths->im;ths->re=t->re*r.re - t->im*r.im;ths->im=t->im*r.re + t->re*r.im;delete t;return *ths;}// operator += *=inline Complex&Complex::operator += (const Complex& r){  return _doapl (this, r);}inline Complex&Complex::operator *= (const Complex& r){  return _doamu (this ,r);}// return re,im;inline doubleimag (const Complex& x){  return x.imag ();}inline doublereal (const Complex& x){  return x.real ();}// Plus 3 modeinline Complexoperator + (const Complex& x, const Complex& y){  return Complex (real (x) + real (y), imag (x) + imag (y));}inline Complexoperator + (const Complex& x, double y){  return Complex (real (x) + y, imag (x));}inline Complexoperator + (double x, const Complex& y){  return Complex (x + real (y), imag (y));}

主函数测试部分：

#include <cstring>#include <cstdio>#include <iostream>using namespace std;#include "Complex.h"int main (){// referencesComplex c1(2,1);cout<<"Put c1"<<endl;c1.Put();cout<<endl;Complex c2(4,3);cout<<"Put c2"<<endl;c2.Put();cout<<endl;Complex c3;cout<<"Put c3"<<endl;c3.Put();cout<<endl;/*//Function setcout<<"after Set , Put c1"<<endl;c1.Set(3,2);c1.Put();*//* c1+=c2;cout<<"after Plu , c1"<<endl;c1.Put();cout<<endl;*///operator *=/*c1*=c2;cout<<"after Mut, c1"<<endl;c1.Put();cout<<endl;*//*//operator Plus c+ccout<<"c1+c2=";(c1+c2).Put();cout<<endl;//operator Plus c+rcout<<"c1+2=";(c1+2).Put();cout<<endl;//operatro Plus r+ccout<<"3+c1=";(3+c1).Put();cout<<endl;*/system("pause");return 0;}