C++设计模式——桥模式

#include <iostream>
#include <string>
using namespace std;

class base
{
public:
 virtual void run()=0;
};

class dev1: public base
{
public:
 virtual void run()
 {
  cout<<"dev1"<<endl;
 }
};

class dev2: public base
{
public:
 virtual void run()
 {
  cout<<"dev2"<<endl;
 }
};

class manager
{
public:
 manager(int a)
 {
  if (a==1)
  {
   m_pBase=new dev1;
  }
  else
  {
   m_pBase=new dev2;
  }
 }
 void run()
 {
  if (m_pBase)
  {
   m_pBase->run();
  }
 }
private:
 base* m_pBase;
};

int main()
{
 manager t_manager(1);
 t_manager.run();
}