using System;

//csc class_using_fields.cs

class using_fields

{

public const int one = 1, two = 2, three = 3;

public readonly int ID =1234;

int field =24;

public static void Main()

{

using_fields ufs = new using_fields();

int result = (one * two ) + three;

Console.WriteLine("ID "+ ufs.ID);

Console.WriteLine("field " + ufs.field);

Console.WriteLine("result " + result);

}

}