#include?
#include
#include?
?
using?namespace?std;??
?
class?Time
{
public:
	int?hour;
	int?minute;
	int?second;
?
protected:
private:
};
?
Time?t1={145630};?
?
class?A??
{
	public:??
		void?foo（）??
		{
			printf（“A?foo（）\n“）;??
		}
?
		virtual?void?fun（）??
		{
			printf（“A?virtual?fun（）\n“）;??
		}
};
?
class?B?:?public?A??
{
	public:??
		void?foo（）??
		{
			printf（“B?foo（）\n“）;??
		}
?
		void?fun（）??
		{
			printf（“B?virtual?fun（）\n“）;??
		}
};
?
class?base??
{
	public:??
		virtual?void?f（float?x）??
		{
			cout<<“base::f（float）“<		}
?
		void?g（float?x）??
		{
			cout<<“base::g（float）“<		}
?
		void?h（float?x）??
		{??
			cout<<“base::h（float）“<		}??
};
?
class?Derived?:?public?base??
{
public:
	//Derived::f（float）覆蓋了base::f（float）。
	virtual?void?f（float?x）??
	{
		cout<<“Derived::f（float）“<	}
?
	//Derived::g（int）隱藏了base::g（f