类和类的继承的简单使用

# include <iostream>
using  namespace std;

class Animal

 {
public:
     Animal(int heigh, int weight)//构造函数
    {
//        cout <<"Animal construct"<<endl;
    }
     ~Animal()//析构函数
    {
//        cout <<"Animal 析构函数 ^_^ " << endl;
    }
     void eat()
     {
         cout <<"animal eat!" <<endl;
     }

     void sleep()
     {
             cout <<"animal sleep!" <<endl;
     }
     void breakthe()
     {
             cout <<"animal breakthe!" <<endl;
     }

 };

class fish : public Animal//继承
{
public:
     fish() : Animal(400, 300), a(1)//析构函数，对a初始化
    {
//        cout <<"fish construct"<<endl;
    }
     ~fish()
     {
//        cout <<"fish deconstruct"<<endl;
    }
     void breakthe()
     {

 //        Animal :: breakthe();//访问Animal类中的breaktne()函数
        cout << "fish bublle ^_^" << endl;
     }
private:
     const int a;

 };

void fn(Animal *pAn)

 {

     fish *fi;
     cout << &pAn << endl;
     cout << &fi << endl;
     fi->breakthe();
     pAn->breakthe();

 }
int main()

 {
     Animal an(3, 5);
     Animal *pAn;
     fish fi;
   
     pAn = &fi;
     fn(pAn);
     return 0;

 }