C++ 運算子多載

標籤：運算子多載   c++   

<span style="font-family: Arial, Helvetica, sans-serif;">#include <iostream></span>

using namespace std;class complex{public:// 帶預設值的建構函式complex (double real = 0, double image = 0):_real(real),_image(image){cout<<"complex (double real = 0, double image = 0)"<<endl;}// 解構函式~complex(){cout<<"~complex()"<<endl;}// 拷貝建構函式complex (const complex& d)        :_image(d._image),_real(d._real){cout<<"complex (const complex& d)"<<endl;}// 賦值運算子多載complex& operator= (const complex& d){cout<<"operator= (const complex& d)"<<endl;if (this != &d){this->_real = d._real;this->_image = d._image;}return *this;}// 取地址運算子多載complex* operator& (){cout<<"operator&()"<<endl;return this;}// const修飾的取地址運算子多載const complex* operator& () const{cout<<"operator&() const"<<endl;return this;}void display(){cout<<"real:"<<_real<<"--image:"<<_image<<endl<<endl;}// 請實現下面的運算子多載！complex& operator++()  //前置++    //返回當前對象本身{    cout<<"operator++()"<<endl;        _real++;        _image++;return *this;                  //可以立即體現出前置++的值}complex operator++(int)//後置++{    cout<<"operator++(int)"<<endl;        complex c = *this;        this->_real++;        this->_image++;        return c;}complex& operator--(){        cout<<"operator--()"<<endl;        _real--;        _image--;        return *this;}complex operator--(int) //後置--{        cout<<"operator--()"<<endl;        complex c = *this;        this->_real--;        this->_image--;        return c;}complex operator+(const complex& c){        cout<<"operator+(const complex& c)"<<endl;        return complex(_real+c._real,_image+c._image);}complex operator-(const complex& c){        cout<<"operator-(const complex& c)"<<endl;        return complex(_real-c._real,_image-c._image);}complex& operator-=(const complex& c){        cout<<"operator-=(const complex& c)"<<endl;        _real -= c._real;        _image -= c._image;        return *this;}complex& operator+=(const complex& c){        cout<<"operator+=(const complex& c)"<<endl;        _real += c._real;        _image += c._image;        return *this;}complex operator*(const complex& c){        cout<<"operator*(const complex& c)"<<endl;        return complex(_real*c._real-_image*c._image,c._image*_real+_image*c._real);}complex operator/(const complex& c){        cout<<"operator/(const complex& c)"<<endl;        return complex((_real/c._real+_image*c._image)/(c,_real*c._real+c._image*c._image),(_image*c._real-_real*c._image)/(c,_real*c._real+c._image*c._image));}private:double _real;double _image;};

C++ 運算子多載