[C++] 멤버함수에 대한 포인터배열

//Listing 15.10 Pointers to member functions using virtual methods

#include <iostream>
using namespace std;

class Mammal
{
public:
        Mammal():itsAge(1) {  }
        virtual ~Mammal() { }
        virtual void Speak() const = 0;
        virtual void Move() const = 0;
protected:
        int itsAge;
};

class Dog : public Mammal
{
public:
        void Speak()const { cout << "Woof!\n"; }
        void Move() const { cout << "Walking to heel...\n"; }
};


class Cat : public Mammal
{
public:
        void Speak()const { cout << "Meow!\n"; }
        void Move() const { cout << "slinking...\n"; }
};


class Horse : public Mammal
{
public:
        void Speak()const { cout << "Winnie!\n"; }
        void Move() const { cout << "Galloping...\n"; }
};


int main()
{
        void (Mammal::*pFunc)() const =0;
        Mammal* ptr =0;
        int Animal;
        int Method;
        bool fQuit = false;

        while (fQuit == false)
        {
                cout << "(0)Quit (1)dog (2)cat (3)horse: ";
                cin >> Animal;
                switch (Animal)
                {
                case 1:        ptr = new Dog; break;
                case 2: ptr = new Cat; break;
                case 3: ptr = new Horse; break;
                default: fQuit = true; break;
                }
                if (fQuit)
                        break;

                cout << "(1)Speak  (2)Move: ";
                cin >> Method;
                switch (Method)
                {
                case 1: pFunc = Mammal::Speak; break;
                default: pFunc = Mammal::Move; break;
                }

                (ptr->*pFunc)();
                delete ptr;
        }
        return 0;
}