using System;

public class CupOfCoffee

{

    public string BeanType;

    public string Description;

    public CupOfCoffee()

    {

        BeanType = "Unknown";

        Description = "Unknown";

    }

    public CupOfCoffee(string beantype)

    {

        BeanType = beantype;

    }

    public static void Main()

    {

        CupOfCoffee cup1 = new CupOfCoffee();

        Console.WriteLine(cup1.BeanType);

        var cup2 = new CupOfCoffee("Coffee Bean");

        Console.WriteLine(cup2.BeanType);

    }

}

​