private static void DeleteProducts(ShoppingCenter shoppingCenter, string[] args) { if (!args.Any()) { return; } var count = 0; if (args.Length > 1) { var name = args[0]; var producer = args[1]; count = shoppingCenter.DeleteProductsByNameAndProducer(name, producer); } else { count = shoppingCenter.DeleteProductsByProducer(args[0]); } Print(count); }