#include<iostream>
using namespace std;
class Base
{
public:
	void fun()
	{
		cout << "Base::fun()" << endl;
	}
	void fun(int a)
	{
		cout << "Base::fun(int)" << endl;
	}
	void fun(int a, float b)
	{
		cout << "Base::fun(int,float)" << endl;
	}
};
void main()
{
	Base c;
	c.fun();
	c.fun(1);
	c.fun(1, 1.0);
}

class Base
{
public:
	void fun()
	{
		cout << "Base::fun()" << endl;
	}
};
class D :public Base
{
public:
	void fun(int)
	{
		cout << "D fun(int)" << endl;
	}
};
int main()
{
	D d;
	//d.fun() 如果這樣調用 系統(tǒng)會提示缺少參數(shù)
	d.fun(1);//同名隱藏，此時調用的是子類中的fun函數(shù)
	//如果想調用父類對象，下面的語句可以幫你實現(xiàn)，你需要指出調用的是誰的fun
	d.Base::fun();
	
}

class Person
{
public:
	virtual void Eat()
	{
		cout << "Person Eat food" << endl;
	}
	virtual void sleep()
	{
		cout << "Person sleep " << endl;
	}
	void study()
	{
		cout << "We need study" << endl;
	}
};
class Lily:public Person
{
public:
	virtual void Eat()
	{
		cout << "Lily Eat dumpling" << endl;
	}
	virtual void sleep()
	{
		cout << "Lily sleeps and dreams " << endl;
	}
};
void main()
{
	Lily L;
	/*子類對象不能直接調用被重寫的方法
	因為對D實例化的對象來說重寫的函數(shù)覆蓋掉了父類的虛函數(shù)
	*/
	Person *pr = &L;
	pr->Eat();
	pr->sleep();
	L.study();
}