using System;

​

public class Program

{

    public static void Main()

    {

        var classObject = new Class1();

        var itemValue = classObject.Calculate(100, 1, 10);

        Console.WriteLine("Itemalue: " + itemValue);

    }

​

    public class Class1

    {

        public decimal Calculate(decimal amount, int type, int years)

        {

            decimal result = 0;

            decimal disc = (years > 5) ? (decimal)5 / 100 : (decimal)years / 100;

            if (type == 1)

            {

                result = amount;

            }

            else if (type == 2)

            {

                result = (amount - (0.1m * amount)) - disc * (amount - (0.1m * amount));

            }

            else if (type == 3)

            {

                result = (0.7m * amount) - disc * (0.7m * amount);

            }

            else if (type == 4)

            {

                result = (amount - (0.5m * amount)) - disc * (amount - (0.5m * amount));

            }

​

            return result;

        }

    }

}