using System;

public class Program

{

    public static void Main()

    {

        double sales, commission;

            string inputString;

            const int LOWSALES = 1000;

            const int MEDSALES = 5000;

            const int HIGHSALES = 10000;

            const double LOWPCT = 0.05;

            const double MEDPCT = 0.02;

            const int BONUS1 = 500;

            const int BONUS2 = 1000;

            Console.WriteLine("What was the sales amount? ");

            inputString = Console.ReadLine();

            sales = Convert.ToDouble(inputString);

            commission = LOWPCT * sales;

            if (sales <= LOWSALES)

                commission += (sales - LOWSALES) * MEDPCT;

            else

              if (sales = MEDSALES)

                commission += BONUS1;

            else

                 if (sales > HIGHSALES)

                commission == BONUS2;

            Console.WriteLine("Sales: {0}\nCommission: {1}",

              sales.ToString("C"), commission.ToString("C"));

            Console.ReadKey();

    }

}