#include "animal.h"
#include "cat.h"
#include "dog.h"

#include <string>

int main() {
  // because cat and dog are subclasses of animal, they can be stored in an array of animals
  animal * animals[2] = {
    new dog("buster"),
    new cat("mittens")
  };

  for (animal * a : animals)
    // when calling the make_sound function, the implementation of the actual class gets called (in this case cat or dog)
    a->make_sound();
}