设计模式-代理模式

#include <iostream>
#include <string>

using namespace std;

//抽象基类
class Worker {
public:
 virtual void write() = 0;
 virtual void read() = 0;
};

//具体的工作的实现

class mworker :public Worker
{
public:
 virtual void write()
 {
  cout << "writeing....." << endl;
 }
 virtual void read()
 {
  cout << "reading....." << endl;
 }
};

//代理工作

class hwork :public Worker
{
public:
 hwork(mworker * m)
 {
  this->_m = m;
 }
 virtual void write()
 {
  cout << "ssssss" << endl;  //可以添加自己的业务处理
  this->_m->write();
 }
 virtual void read()
 {
  cout << "cccc" << endl; //可以添加自己的业务处理
  this->_m->read();
 }
private:
 mworker * _m;  //获取基类 实现多态
};

//要执行的任务

int main(void)
{

 Worker * w = NULL;
 
 hwork *h = new hwork(new mworker);   //
 

 h->read();
 h->write();

 delete h;

 system("pause");
 return 0;
}