static void AbstractDemo() { TRex trex = new TRex(); Triceratops triceratops = new Triceratops(); trex.EatFood(); trex.Move(); trex.Fights(); trex.Sleeps(); trex.SkinType(); trex.Teeth(); triceratops.EatFood(); triceratops.Move(); triceratops.Sleeps(); triceratops.SkinType(); triceratops.Teeth(); }