YB5.6 Свойства виртуальных методов. Абстрактные классы

RobertDeMilo

Apr 14th, 2024

Never

Add comment

Not a member of Pastebin yet? Sign Up, it unlocks many cool features!

C++ 1.27 KB | None | 0 0

raw download clone embed print report

#include <iostream>
using namespace std;
class Animal
{
public:
Animal(const string& type):type_(type){}
void Eat(const string& fruit)
{
cout<<type_<<" eats "<<fruit<<endl;
}
// virtual void Voice()const
// {
// cout<< type_<<" is silent"<<endl;
// }
virtual void Voice()const =0;
private:
const string type_;
};
class Cat : public Animal
{
public:
Cat():Animal("cat"){}
void Voice() const override
{
cout << "Meow! " << endl;
}
};
class Dog : public Animal
{
public:
Dog():Animal("dog"){}
void Voice() const override
{
cout << "Whaf! " << endl;
}
};
class Parrot:public Animal
{
public:
Parrot(const string& name):Animal("parrot"),name_(name){}
void Voice() const override
{
cout<<name_<<" is good!"<<endl;
}
private:
const string& name_;
};
class Horse: public Animal
{
public:
Horse():Animal("horse"){}
В классах потомках, если такой метод не объявлен, то будет вызван метод базового класса
};
void MakeSound(const Animal& a)
{
a.Voice();
}
int main()
{
Cat c;
Dog d;
Parrot p("Kesha");
Horse h;
MakeSound(c);
MakeSound(d);
MakeSound(p);
MakeSound(h);
return 0;
}

Add Comment

Please, Sign In to add comment