static void Main(string[] args) { GamerManager gamerManager = new GamerManager(new UserValidationManager()); gamerManager.Add(new Gamer { Id = 1, BirthYear = 1997, FirstName = "RANA", LastName = "KARATOPRAK", IdentityNumber = 1234567890 }); GameManager gameManager = new GameManager(); gameManager.Add(new Game { GameName = "PUBG", GamePrice = 10.0, Id = 1 }); SalesManager salesManager = new SalesManager(); salesManager.CampaignAdd(new Campaign { CampaignName = "İlkbahar Kampanyası", Id = 1 }); salesManager.Sell(new Gamer { FirstName = "RANA" }, new Game { GameName = "PUBG" }); }