#include <iostream>
using namespace std;class Mediator;
//抽象人
class Person
{
protected:  Mediator *m_mediator; //中介
public:  virtual void SetMediator(Mediator *mediator){} //设置中介  virtual void SendMessage(string message) {}    //向中介发送信息  virtual void GetMessage(string message) {}     //从中介获取信息
};
//抽象中介机构
class Mediator
{
public:  virtual void Send(string message, Person *person) {}  virtual void SetA(Person *A) {}  //设置其中一方  virtual void SetB(Person *B) {}
};
//租房者
class Renter: public Person
{
public:  void SetMediator(Mediator *mediator) { m_mediator = mediator; }  void SendMessage(string message) { m_mediator->Send(message, this); }  void GetMessage(string message) { cout<<"租房者收到信息"<<message; }
};
//房东
class Landlord: public Person
{
public:  void SetMediator(Mediator *mediator) { m_mediator = mediator; }  void SendMessage(string message) { m_mediator->Send(message, this); }  void GetMessage(string message) { cout<<"房东收到信息："<<message; }
};
//房屋中介
class HouseMediator : public Mediator
{
private:  Person *m_A; //租房者  Person *m_B; //房东
public:  HouseMediator(): m_A(0), m_B(0) {}  void SetA(Person *A) { m_A = A; }  void SetB(Person *B) { m_B = B; }  void Send(string message, Person *person)   {  if(person == m_A) //租房者给房东发信息  m_B->GetMessage(message); //房东收到信息  else  m_A->GetMessage(message);  }
};  //测试案例
int main()
{     Mediator *mediator = new HouseMediator();  Person *person1 = new Renter();    //租房者  Person *person2 = new Landlord();  //房东  mediator->SetA(person1);  mediator->SetB(person2);  person1->SetMediator(mediator);  person2->SetMediator(mediator);  person1->SendMessage("我想在南京路附近租套房子，价格800元一个月\n");  person2->SendMessage("出租房子：南京路100号，70平米，1000元一个月\n");  delete person1; delete person2; delete mediator;  return 0;
}