#include?
class?Cannonball{//禮花炮彈
public:
	void?ignite（）?//引爆
	{	
		disperse（）;?//動態聯編
	}
	virtual?void?disperse（）{}//炸開
};

class?YellowCannonball:public?Cannonball{	//黃色禮花炮彈
public:
	virtual?void?disperse（）//炸開
	{	
		cout<<“The?yellow?flower?dispersing“<	}
};

class?RedCannonball:public?Cannonball{	//紅色禮花炮彈
public:
	virtual?void?disperse（）//炸開
	{	
		cout<<“The?red?flower?dispersing“<