#include<iostream>
#include<string>
using namespace std;
//虛析構(gòu)和純虛析構(gòu)
class Animal
{
public:
	Animal()
	{
		cout << "調(diào)用了父類的構(gòu)造函數(shù)" << endl;	
	}
	~ Animal()
	{
		cout << "調(diào)用了父類的析構(gòu)函數(shù)" << endl;
	}
	virtual void speak() = 0;//純虛函數(shù)
};
class Cat :public Animal
{
public:
	string *m_Name;
	//在子類的構(gòu)造函數(shù)，加入小貓的姓名
	Cat(string name)
	{
		cout << "調(diào)用了子類-小貓類的構(gòu)造函數(shù)" << endl;
		m_Name = new string(name);//在堆區(qū)創(chuàng)建
	}
	~Cat()
	{
		if (m_Name != NULL)
		{
			delete m_Name;
			m_Name = NULL;
			cout<<"調(diào)用了子類-小貓類的析構(gòu)函數(shù)"<<endl;
		}
	}
	virtual void speak()
	{
		cout << *m_Name<<"小貓在說話" << endl;//解引用
	}
};
void testSpeak()
{
	Animal *animal = new Cat("Tom");//有參構(gòu)造函數(shù)
	animal->speak();
	delete animal;
}
int main()
{
	testSpeak();
}

//虛析構(gòu)和純虛析構(gòu)
class Animal
{
public:
	Animal()
	{
		cout << "調(diào)用了父類的構(gòu)造函數(shù)" << endl;	
	}
	virtual ~ Animal()
	{
		cout << "調(diào)用了父類的析構(gòu)函數(shù)" << endl;
	}
	virtual void speak() = 0;//純虛函數(shù)
};

//虛析構(gòu)和純虛析構(gòu)
class Animal
{
public:
	Animal()
	{
		cout << "調(diào)用了父類的構(gòu)造函數(shù)" << endl;	
	}
	//virtual ~ Animal()
	//{
	//	cout << "調(diào)用了父類的析構(gòu)函數(shù)" << endl;
	//}
	virtual ~Animal() = 0;//純虛析構(gòu)
	virtual void speak() = 0;//純虛函數(shù)
};
Animal::~Animal()
{
	cout << "調(diào)用了父類的純虛析構(gòu)函數(shù)" << endl;
}