#include <iostream>
using namespace std;
typedef class Complex
{
  float realPart;
  float imagPart;
public:
  Complex() {}
  Complex(float real, float imag)
  {
    realPart = real;
    imagPart = imag;
  }
  float GetRealPart()
  {//获得实数部分
    return realPart;
  }
  float GetImagPart()
  {//获得虚数部分
    return imagPart;
  }
  void Add(float real, float imag);     //复数相加
  void Minus(float real, float imag);     //复数相减
  void Multiply(float real, float imag);    //复数相乘
  void Divide(float real, float imag);    //复数相除
  //运算符重载
  Complex operator + (Complex &c2)
  {
    Add(c2.GetRealPart(), c2.GetImagPart());
    return *this;
  }
  Complex operator - (Complex &c2)
  {
    Minus(c2.GetRealPart(), c2.GetImagPart());
    return *this;
  }
  Complex operator * (Complex &c2)
  {
    Multiply(c2.GetRealPart(), c2.GetImagPart());
    return *this;
  }
  Complex operator / (Complex &c2)
  {
    Divide(c2.GetRealPart(), c2.GetImagPart());
    return *this;
  }
}Cplx;//类重命名

//类内声明，类外定义
void Complex::Add(float real, float imag)
{
  this->realPart += real;
  this->imagPart += imag;
}
void Complex::Minus(float real, float imag)
{
  this->realPart -= real;
  this->imagPart -= imag;
}
void Complex::Multiply(float real, float imag)
{
  this->realPart = this->realPart * real - this->imagPart*imag;//（ac-bd）
  this->imagPart = this->imagPart*real+this->realPart*imag;//(bc+ad)
}
void Complex::Divide(float real, float imag)
{
  this->realPart = (this->realPart * real + this->imagPart*imag)/(pow(real,2) + pow(imag,2));//(ac+bd)/(c^2+d^2)
  this->imagPart = (this->imagPart*real - this->realPart*imag)/(pow(real, 2) + pow(imag, 2));//(bc-ad)/(c^2+d^2)
}

int main()
{
  Cplx c1 = Cplx(1,2);
  Cplx c2 = Cplx(4,5);
  Cplx res1 = c1 + c2;
  Cplx res2 = c1 - c2;
  Cplx res3 = c1 * c2;
  Cplx res4 = c1 / c2;
  cout << res1.GetRealPart() << " " << res1.GetImagPart() << endl;
  cout << res2.GetRealPart() << " " << res2.GetImagPart() << endl;
  cout << res3.GetRealPart() << " " << res2.GetImagPart() << endl;
  cout << res4.GetRealPart() << " " << res2.GetImagPart() << endl;
  return 0;
}