static void Main(string[] args) { //menggunakan abstact classs Lari lari; lari = new Sprint(); lari.Jenis(); Console.WriteLine(); lari = new Estafet(); lari.Jenis(); Console.WriteLine(); lari = new Marathon(); lari.Jenis(); //menggunakan interface /* * ILari lari; * lari = new Sprint(); * lari.Jenis(); * * Console.WriteLine(); * lari = new Estafet(); * lari.Jenis(); * * Console.WriteLine(); * lari = new Marathon(); * lari.Jenis(); */ Console.ReadKey(); }