list1206.cpp

teach yourself C++ in 21 days 第五版

//Listing 12.6 Hiding methods
#include <iostream>
using std::cout;

class Mammal
{
  public:
     void Move() const { cout << "Mammal move one step.\n"; }
     void Move(int distance) const
    {
       cout << "Mammal move ";
       cout << distance <<" steps.\n";
    }
  protected:
    int itsAge;
    int itsWeight;
};

class Dog : public Mammal
{
  public:
    // You might receive a warning that you are hiding a function!
    void Move() const { cout << "Dog move 5 steps.\n"; }
};

int main()
{
   Mammal bigAnimal;
   Dog Fido;
   bigAnimal.Move();
   bigAnimal.Move(2);
   Fido.Move();
   // Fido.Move(10);
   return 0;
}