static void Main(string[] args)
        {
            Flash     Barry_Allen  = new Flash(24, 2000);
            SuperMan  Clark_Kent   = new SuperMan(34, 10000);
            Spiderman Peter_Parker = new Spiderman(28, 2);

            IsuperHero[] heroes = { Barry_Allen, Clark_Kent, Peter_Parker };
            {
                foreach (IsuperHero hero in heroes)
                {
                    ActivateHero(hero);
                }
            }
        }
        static void GetMoreHeroData(IsuperHero Hero)
        {
            if (Hero is Flash)
            {
                Flash flash = Hero as Flash;
                Console.WriteLine(flash.GetVoltage());
            }
            else if (Hero is Spiderman)
            {
                Spiderman spiderman = Hero as Spiderman;
                Console.WriteLine(spiderman.GetWebLeft());
            }
            else
            {
                SuperMan superman = Hero as SuperMan;

                Console.WriteLine(superman.GetSpeed());
            }
        }
 static IsuperHero CreateHero(string superhero)
 {
     if (superhero == "superman")
     {
         SuperMan super = new SuperMan(30, 50000);
         return(super);
     }
     else if (superhero == "spiderman")
     {
         Spiderman spider = new Spiderman(20, 3000);
         return(spider);
     }
     else if (superhero == "flash")
     {
         Flash flash = new Flash(18, 2000);
         return(flash);
     }
     else
     {
         return(null);
     }
 }