CPP类和对象—Complex的编写

Complex代码如下：

#include 
using namespace std;
class Complex
{
public:
    // 1.完成四个默认成员函数 
    Complex(double real = 0.0, double image = 0.0) //初始化
    {
        cout << "Complex(double real=0.0,double image=0.0)" << endl;
        _real = real;
        _image = image;
    }

    Complex(const Complex& c) //构造函数
    {
        cout << "Complex(const Complex& c)" << endl;
        _real = c._real;
        _image = c._image;
    }

    ~Complex() //析构函数
    {
        cout << "~Complex" << endl;
    }

    Complex& operator=(const Complex& c) ///赋值运算符重载
    {
        cout << "Complex& operator=(const Complex& c)" << endl;
        if (this != &c)
        {
            _real = c._real;
            _image = c._image;
        }
        return *this;
    }

    // 2.比较运算符 
    //operator> 
    bool operator>(const Complex& c)
    {
        while (_image == 0)
        {
            if (_real > c._real)
                return true;
            else
                return false;
        }
    }

    //operator== 
    bool operator==(const Complex& c)
    {
        return _real == c._real&&_image == c._image;
    }

    //operator>= 
    bool operator>=(const Complex& c)
    {
        return *this > c || *this == c;
    }


    //operator< 
    bool operator<(const Complex& c)
    {
        return !(*this >= c);
    }


    //operator<= 
    bool operator<=(const Complex& c)
    {
        return !(*this>c);
    }

    //operator!= 
    bool operator!=(const Complex& c)
    {
        return !(*this == c);
    }

    // 3.前置后置++和+/+=的实现 
    Complex& operator++() //前置++
    {
        this->_real += 1;
        return *this;
    }


    Complex operator++(int) //后置++
    {
        Complex tmp(*this);
        _real += 1;
        return tmp;
    }

    //operator+ 
    Complex operator+(double real)
    {
        Complex tmp(*this);
        tmp._real += real;
        return tmp;
    }

    //operator+= 
    Complex operator+=(double real)
    {
        *this = *this + real;
        return *this;
    }

    void Display()
    {
        cout << _real << "-" << _image << endl;
    }

protected:
    double _real;
    double _image;
};