using System; public class LotteryAccount: BankAccount { private static Lottery lottery = Lottery.Instance(20); public LotteryAccount(string o, decimal b): base(o, b, 0.0) { } public override void AddInterests() { int luckyNumber = lottery.DrawLotteryNumber; balance = balance + lottery.AmountWon(luckyNumber); } public override string ToString() { return owner + "'s lottery account holds " + + balance + " kroner"; } }