static MoneyAmount Reserve(MoneyAmount cost)
{
decimal factor = 1;
if (IsHappyHour)
{
factor = .5M;
}
Console.WriteLine("\nReserving an item that costs {0}.", cost);
return(cost.Scale(factor));
}
static void Buy(MoneyAmount wallet, MoneyAmount cost)
{
bool enoughMoney = wallet.Amount >= cost.Amount;
MoneyAmount finalCost = Reserve(cost);
bool finalEnough = wallet.Amount >= finalCost.Amount;
if (enoughMoney && finalEnough)
{
Console.WriteLine("You will pay {0} with your {1}.", cost, wallet);
}
else if (finalEnough)
{
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);
}
}
