| using System;
/// <summary>
/// A specialization of BankAccount.
/// </summary>
public class LotteryAccount: BankAccount {
private static Lottery lottery = Lottery.Instance(20);
/// <summary> Construct a lottery account based on
/// owner o and the initial balance b </summary>
/// <param name = "o"> The owner of the account </param>
/// <param name = "b"> The initial balance of the account </param>
public LotteryAccount(string o, decimal b):
base(o, b, 0.0) {
}
/// <summary> Add interest to the lottery account.
/// This may be a lot if a drawn lottery number is
/// the winning number. If not, zero interest is added.
/// </summary>
public override void AddInterests() {
int luckyNumber = lottery.DrawLotteryNumber;
balance = balance + lottery.AmountWon(luckyNumber);
}
/// <summary>
/// Return a text string that represents this account
/// for output purposes
/// </summary>
public override string ToString() {
return owner + "'s lottery account holds " +
+ balance + " kroner";
}
} |