设计模式合成复用原则

简单来说，继承和组合优先选择组合，所以在设计模式里面并不是所有的模式都要进行继承

// 合成复用原则.cpp : Defines the entry point for the console application.
//

#include “stdafx.h”
#include
using namespace std;
//抽象类
class AbstractCar
{
public:
virtual void run()=0;
};
//子类
class DaZhong:public AbstractCar
{
public:
virtual void run()
{
cout<<“大众启动ing”< }
};
//子类
class TLJ:public AbstractCar
{
public:
virtual void run()
{
cout<<“拖拉机启动ing”< }
};
//人类
class People
{
public:
People()
{

}
void setCar(AbstractCar *car)
{
	this->car=car;
}
void DouFeng()
{
	this->car->run();
}
~People()
{
	if(this->car!=NULL)
	{
		delete this->car;
	}
}
AbstractCar *car;

};
void test()
{
People p;
p.setCar(new DaZhong);
p.DouFeng();
}
int main(int argc, char* argv[])
{
test();
printf(“Hello World!n”);
return 0;
}