类和类的继承的简单使用
程序代码：# 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;
}
在vc++6.0中的结构：
——————————————————
0019FED4
0019FEC8
fish bublle ^_^
animal breakthe!
-------------------------------------
请问一下执行pAn->breaktne();的结果为啥是animal breaktne!
我想的是pAn = &fi;
那么执行 pAn->breaktne(); 后应该显示：fish bublle ^_^
[此贴子已经被作者于2016-5-1 10:41编辑过]
