/* File:   poly.h
   Author: Katherine Gibson (gibsonk@seas)
   Desc:   example of polymorphism using Animal and its child classes
           Cat, Dog, and Bird -- prototypes
*/

#ifndef POLY_H_
#define POLY_H_

#define DEF_VAL 0
#define DEF_STRING ""

class Animal {
public:
  // constructor
  Animal(string name = DEF_STRING);
  
  // functions
  void Eat();
  void Speak();
  void Perform();

  // variables
  string m_name;
} ;

class Bird: public Animal {
public:
  // constructor
  Bird(string name = DEF_STRING);

  //functions
  void Eat();
  void Speak();
  void Perform();

} ;

class Cat: public Animal {
public:
  // constructor
  Cat(string name = DEF_STRING);

  //functions
  void Eat();
  void Speak();
  void Perform();
  
} ;

class Dog: public Animal {
public:
  // constructor
  Dog(string name = DEF_STRING);

  //functions
  void Eat();
  void Speak();
  void Perform();

} ;



#endif /* POLY_H_ */