#include <iostream>
#include <cmath>
using namespace std;
class Complex
{
private:
    double real,image;                  //分别为实部、虚部
public:
    Complex(double rel=0, double img=0)
    {
        real=rel;
        image=img;
    }
    
    void display()                    //输出(a+b*i) 、(a-b*i) 、(a)等形式
    {
        cout<<" ("<<real;
        if (image>0) 
            cout<<"+"<<image<<"*i) ";//虚部为正
        else if (image<0) 
            cout<<image<<"*i) ";        //虚部为负
        else
            cout<<") ";                //虚部为，即为实数
    }
    
    //用成员函数方法来重载+、*运算符
    Complex operator +(Complex & c);
    Complex operator *(Complex & c);
    Complex operator -(Complex & c);
    Complex operator /(Complex & c);
    friend ostream & operator<<(ostream & output,Complex & t);//重载运算符<<
    friend istream & operator>>(istream & input,Complex & t);    //重载运算符>>
};
Complex::Complex(real,image)
{
    real=t.real;
    image=t.image;
}
Complex Complex::operator +(Complex & c)
{
    Complex temp;
    temp.real=real+c.real;
    temp.image=image+c.image;
    return temp;
}

Complex Complex::operator *(Complex & c)
{
    Complex temp;
    temp.real=real*c.real-image*c.image ;
    temp.image=real*c.image+image*c.real;
    return temp;
}

Complex Complex::operator -(Complex & c)
{
    Complex temp;
    temp.real=real-c.real;
    temp.image=image-c.image;
    return temp;
}
Complex Complex::operator /(Complex & c)
{
    Complex temp;
    double square=c.real*c.real+c.image*c.image;
    if (fabs(square)<1e-6)
    {
        cout<<"除数为, 不能进行除法运算!";
        return temp;
    }
        temp.real=(real*c.real+image*c.image)/square;
    temp.image=(c.real*image-real*c.image)/square;
    return temp;
}
ostream & operator<<(ostream & output,Complex & real,Complex &image)//重载运算符<<
{
    output<<t.real<<"實部"<<t.image<<"虛部";
    return output;
}

istream & operator>>(istream & input,Complex & real,Complex &image) //重载运算符>>
{
    int real, image;
    input>>real;
    input.ignore(); //ignore()是istream类的成员函数
    input>>image;    //ignore()的作用：删除输入流中指定数目的字符
    input.ignore();
    t=Complex(real,image);  //用输入内容来修改时间对象t的值
    return input;    
}

void main()
{
    Complex c1(1,2), c2(3,-4),c3,c4,c5,c6;
     c3=c1+c2;
    c4=c1*c2;
    c5=c1-c2;
    c6=c1/c2;
    //输出加的结果
    c1.display();
    cout<<"+";
    c2.display();
    cout<<"=";
    c3.display();
    cout<<endl;

    //输出乘的结果
    c1.display();
    cout<<"*";
    c2.display();
    cout<<"=";
    c4.display ();
    cout<<endl;

        //输出减的结果
    c1.display();
    cout<<"-";
    c2.display();
    cout<<"=";
    c5.display();
    cout<<endl;

        //输出除的结果
    c1.display();
    cout<<"/";
    c2.display();
    cout<<"=";
    c6.display();
    cout<<endl;

}