c++实现复数类运算

#define  _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
using namespace std;
class Complex
{
private:
       int _real;
	   int _image;
public:
	  Complex(int real=1,int image=2)
		  :_real(real)
		  ,_image(image)
	  {
	    
	  }
	  Complex& operator+(const Complex& com2)
	 {
		 return Complex(_real+com2._real,_image+com2._image);
	 }
	  Complex& operator-(const Complex& com2)
	  {
		  return Complex(_real-com2._real,_image-com2._image);
	  }
	 Complex& operator*(Complex& com2)
	 {
		 return Complex(_real*com2._real-_image*com2._image,_real*com2._image+_image*com2._real);
	 }

	 //:(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +(bc-ad)/(c^2+d^2)i
	 Complex& operator/(const Complex& com2)
	 {
		 return Complex ((_real*com2._real+_image*com2._image)\
			 /(com2._real*com2._real+com2._image*com2._image)\
			 ,_image*com2._real-_real*com2._image);
	 }
	  void Display()
	  {
	      cout<<(_real)<<"+"<<(_image)<<"i"<<endl;
	  }
	  ~Complex()
	  {
	     
	  }
	
};
int main()
{
	Complex com1(3,6);
	Complex com2(4,5);
	Complex  com3;
	Complex  com4;
	Complex  com5;
	Complex  com6;
	com1.Display();
	com2.Display();
	cout<<endl;
//加
	cout<<"加法"<<endl;
    com3=com1+com2;
    com3.Display();
	cout<<endl;
//减
	cout<<"减法"<<endl;
	com4=com1-com2;
	com4.Display();
	cout<<endl;
//乘法
	cout<<"乘法"<<endl;
	com5=com1*com2;
      com5.Display();
	  cout<<endl;
  //除法
	  cout<<"除法"<<endl;
	  com6=com1/com2;
	  com6.Display();
	  cout<<endl;
  return 0;
}