#include <iostream>
  
enum BREED { YORKIE, CAIRN, DANDIE, SHETLAND, DOBERMAN, LAB };
  
class Mammal
{
public:
    // constructors
    Mammal();
    ~Mammal();
  
    // accessors
    int getAge() const { return age; }
    void setAge(int newAge) { age = newAge; }
    int getWeight() const { return weight; }
    void setWeight(int newWeight) { weight = newWeight; }
  
    // other methods
    void speak() const { std::cout << "Mammal sound!\n"; }
    void sleep() const { std::cout << "shhh. I'm sleeping.\n"; }
  
protected:
    int age;
    int weight;
};
  
class Dog : public Mammal
{
public:
    // constructors
    Dog();
    ~Dog();
  
    // accessors
    BREED getBreed() const { return breed; }
    void setBreed(BREED newBreed) { breed = newBreed; }
  
    // other methods
    void wagTail() { std::cout << "Tail wagging ...\n"; }
    void begForFood() { std::cout << "Begging for food ...\n"; }
  
private:
    BREED breed; 
};
  
Mammal::Mammal():
age(1),
weight(5)
{
    std::cout << "Mammal constructor ...\n";
}
  
Mammal::~Mammal()
{
    std::cout << "Mammal destructor ...\n";
}
  
Dog::Dog():
breed(YORKIE)
{
    std::cout << "Dog constructor ...\n";
}
  
Dog::~Dog()
{
    std::cout << "Dog destructor ...\n";
}
  
int main()
{
    Dog fido; // create a dog
    fido.speak();
    fido.wagTail();
    std::cout << "Fido is " << fido.getAge() << " years old\n";
    return 0;
}