public:
virtual void how_to_eat()const=0;
virtual void show_priority()const=0;
fruit(string a,string b,double c);
string name;
string color;
double price;
};
class apple:public fruit
{
public:
apple();
void how_to_eat()const;
void show_priority()const;
};
class bnana:public fruit
{
public:
bnana();
void show_priority()const;
void how_to_eat()const;
};
fruit::fruit(string a,string b,double c):name(a),color(b),price(c){}
apple::apple():fruit("apple","red",1.23){}
bnana::bnana():fruit("bnana","yellow",0.34){}
void apple::how_to_eat()const
{
cout<<"直接吃"<<endl;
}
void apple::show_priority()const
{
cout<<name<<endl<<color<<endl<<price<<endl;
}
void bnana::how_to_eat()const
{
cout<<"去了皮再吃"<<endl;
}
void bnana::show_priority()const
{
cout<<name<<endl<<color<<endl<<price<<endl;
}
int main()
{
fruit *p[2]={NULL};
p[0]=new apple;
p[1]=new bnana;
for(int i=0;i<2;i++)
{
p[i]->show_priority();p[i]->how_to_eat();
}
return 0;
}
