c20-策略模式例.txt

C++课件,很好用的,帮助大家学习C++.

//策略模式例 

class Player
{
public:
	Player(Strategy  * s){ mpStrategy=s;)
	int ChooseOneCard()
	{
		//...
		int val=myStrategy->SelectOne();
		//...
	}
	//...
private:
	Strategy  * mpStrategy;

};


class Strategy  
{
public:
	virtual int SelectOne()=0;
};

class MaxStrategy:public Strategy 
{
	virtual int SelectOne()
	{	
		//...
		return maxinall;
	}
}; 
class MinStrategy:public Strategy 
{
	virtual int SelectOne()
	{	
		//...
		return mininall;
	}
}; 


//------------------------------------------
MaxStrategy * pMax=new MaxStrategy;
MixStrategy * pMin=new MixStrategy;
Player player1(pMax);
player1.ChooseOneCard();