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 Console.WriteLine("Coffee sizes: 1=Small 2=Medium 3=Large");
            Console.Write("Please enter your selection: ");
            string s = Console.ReadLine();
            int n = int.Parse(s);
            int cost = 0;
            switch (n)
            {
                case 1:
                    cost += 25;
                    break;
                case 2:
                    cost += 25;
                    goto case 1;
                case 3:
                    cost += 50;
                    goto case 1;
                default:
                    Console.WriteLine("Invalid selection.");
                    break;
            }