Sams Teach Yourself C++ in 21 Days

Polymorphism 451

14

9: void Gallop(){ cout << “Galloping...\n”; }

10: virtual void Fly() { cout << “Horses can’t fly.\n” ; }

11: private:

12: int itsAge;

13: };

14:

15: class Pegasus : public Horse

16: {

17: public:

18: virtual void Fly()

19: {cout<<”I can fly! I can fly! I can fly!\n”;}

20: };

21:

22: const int NumberHorses = 5;

23: int main()

24: {

25: Horse* Ranch[NumberHorses];

26: Horse* pHorse;

27: int choice,i;

28: for (i=0; i<NumberHorses; i++)

29: {

30: cout << “(1)Horse (2)Pegasus: “;

31: cin >> choice;

32: if (choice == 2)

33: pHorse = new Pegasus;

34: else

35: pHorse = new Horse;

36: Ranch[i] = pHorse;

37: }

38: cout << endl;

39: for (i=0; i<NumberHorses; i++)

40: {

41: Ranch[i]->Fly();

42: delete Ranch[i];

43: }

44: return 0;

45: }

(1)Horse (2)Pegasus: 1

(1)Horse (2)Pegasus: 2

(1)Horse (2)Pegasus: 1

(1)Horse (2)Pegasus: 2

(1)Horse (2)Pegasus: 1

Horses can’t fly.

I can fly! I can fly! I can fly!

Horses can’t fly.

I can fly! I can fly! I can fly!

Horses can’t fly.

OUTPUT

LISTING14.1 continued