static MoneyAmount Reserve(MoneyAmount cost)
{
decimal factor = 1;
if (IsHappyHour)
{
factor = .5M;
}
Console.WriteLine("Reserving an item that costs {0},", cost);
return(cost * factor);
}
static void Buy(MoneyAmount wallet, MoneyAmount cost)
{
bool enoughMoney = wallet.Amount >= cost.Amount;
MoneyAmount finalCost = Reserve(cost);
bool enoughFinalMoney = wallet.Amount >= finalCost.Amount;
if (enoughMoney && enoughFinalMoney)
{
Console.WriteLine("You will pay {0} with your {1}.", cost, wallet);
}
else if (enoughFinalMoney)
{
Console.WriteLine("This time, {0} will be enough to pay {1}.", wallet, finalCost);
}
else
{
Console.WriteLine("You cannot pay {0} with your {1}.", cost, wallet);
}
}
