public bool InsertCoin(ICoin coinType)
{
if (IsValid(coinType))
{
amount += coinType.Value;
coinHandler.InsertCoin(coinType.Type(), 1);
display = "$" + amount.ToString();
return(true);
}
else
{
return(false);
}
}
public bool IsValid(ICoin usCoin)
{
return((usCoin.Type() == CoinTypes.USNickel ||
usCoin.Type() == CoinTypes.USDime ||
usCoin.Type() == CoinTypes.USQuarter) ? true : false);
}
