reversing-1.cpp

#include <cstdlib>
#include <iostream>

struct Mammal {
  Mammal() { std::cout << "Mammal::Mammal\n"; }
  virtual ~Mammal() { std::cout << "Mammal::~Mammal\n"; };
  virtual void run() = 0;
  virtual void walk() = 0;
  virtual void move() { walk(); }
};

struct Cat : Mammal {
  Cat() { std::cout << "Cat::Cat\n"; }
  virtual ~Cat() { std::cout << "Cat::~Cat\n"; }
  virtual void run() { std::cout << "Cat::run\n"; }
  virtual void walk() { std::cout << "Cat::walk\n"; }
};

struct Dog : Mammal {
  Dog() { std::cout << "Dog::Dog\n"; }
  virtual ~Dog() { std::cout << "Dog::~Dog\n"; }
  virtual void run() { std::cout << "Dog::run\n"; }
  virtual void walk() { std::cout << "Dog::walk\n"; }
};