void Start()
{
HumanoidClass human = new HumanoidClass();
HumanoidClass enemy = new EnemyClass();
HumanoidClass orc = new OrcClass();
//Notice how each Humanoid variable contains
//a reference to a different class in the
//inheritance hierarchy, yet each of them
//calls the Humanoid Yell() method.
human.Yell();
enemy.Yell();
orc.Yell();
}
