复数类的实现

复数类的默认成员函数的实现。加减乘除，自增，自减的实现。

#include<iostream>
using namespace std;
class Complex
{
public:
	//显示
	void Display()
	{
		cout<<_real<<"+"<<_image<<"i"<<endl;
	}
	//构造函数
	Complex(double x=0.0,double y=0.0)
	{
		_real=x;
		_image=y;	
	}
	//析构函数
	~Complex()
	{
		;//cout<<"析构函数"<<endl;
	}
	//拷贝构造
	Complex(const Complex& c1)
	{
		if(this!=&c1)
		{
			_real=c1._real;
			_image=c1._image;
		}
		cout<<"拷贝构造"<<endl;
	}
	//加法
	Complex operator+(Complex &c1)
	{
		Complex c2;
		c2._real=_real+c1._real;
		c2._image=_image+c1._image;
		return c2;
	}
	//减法
	Complex operator-(Complex &c1)
	{
		Complex c2;
		c2._real=_real-c1._real;
		c2._image=_image-c1._image;
		return c2;
	}
	//乘法
	Complex operator *(Complex &c1)
	{
		Complex c2;
		c2._real=_real*c1._real;
		c2._image=_image*c1._image;
		return c2;
	}
	//除法
	Complex operator/(Complex &c1)
	{
		Complex c2;
		c2._real=_real/c1._real;
		c2._image=_image/c1._image;
		return c2;
	}
	//加等
	Complex& operator+=(const Complex &c1)
	{
		_real+=c1._real;
		_image+=c1._image;
		return *this;
	}
	//减等
	Complex& operator-=(const Complex &c1)
	{
		_real-=c1._real;
		_image-=c1._image;
		return *this;
	}
	//前置++
	Complex& operator ++()
	{
		++_real;
		++_image;
		return *this;
	}
	//后置++
	Complex operator ++(int)
	{
		Complex tmp(*this);
		this->_real++;
		this->_image++;
		return tmp;
	}
	//前置--
	Complex& operator--()
	{
		_real--;
		_image--;
		return *this;
	}
	//后置--
	Complex operator--(int)
	{
		Complex tmp(*this);
		this->_real--;
		this->_image--;
		return tmp;
	}
	//判断大小   c1>c2
	Complex()
	{
		;
	}
private:
	double _real;
	double _image;
};
int main()
{
	Complex c1(1.0,2.0),c2(2.0,2.0),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();
	c1+=c2;
	cout<<"c1=";
	c1.Display();
	c1-=c2;
	cout<<"c1=";
	c1.Display();*/
	c3=c2+(--c1);
	cout<<"c3=";
	c3.Display();
	cout<<"c1=";
	c1.Display();
	system("pause");
	return 0;
}

以写一个复数类，了解C++的三大特性，及默认成员函数的实现。