NOTE/COIN COUNTER

static void Main(string[] args)
        {
            function_kaska();


        }
        static void function_kaska()
        {
            Console.WriteLine("Enter the amount of money to be devided into coins and notes");
            double[] coins_notes = { 100, 50, 20, 10, 5, 2, 1 };
            double given_amount;
            if (!double.TryParse(Console.ReadLine(), out given_amount))
            {
                Console.WriteLine("give me some real amount bro (any key to exit)");
                Console.ReadKey();
                Environment.Exit(0);
            }
            Console.WriteLine("Number of nominals: ");
            int i = 0;
            while (given_amount > 0)
            {
                if (given_amount >= coins_notes[i])
                    {
                    int amount_of_coins_nominals = (int)(given_amount / coins_notes[i]);
                    given_amount = Math.Round(given_amount - coins_notes[i] * amount_of_coins_nominals, 2); //Odjęcie wypłaconych środków od reszty

                    Console.WriteLine(amount_of_coins_nominals + " x " + "$" + coins_notes[i]);
                }
                i++;
            }
            Console.ReadKey();



        }