// take a coin of the specified denomination out of the box
public Boolean Withdraw(Coin.Denomination ACoinDenomination)
{
var aCoin =
from firstCoin in box
where firstCoin.DenominationEnumeral == ACoinDenomination
select firstCoin;
Boolean result = false;
if (aCoin.Count() > 0)
{
result = box.Remove(aCoin.First());
}
return result;
}
// put a coin in the coin box
public void Deposit(Coin ACoin)
{
box.Add(ACoin);
}
public int coinCount(Coin.Denomination denominationEnumeral)
{
var roll =
from coin in box
where coin.DenominationEnumeral == denominationEnumeral
select coin;
return roll.Count();
}
public Boolean Transfer(CoinBox Destination, decimal Amount, Boolean ExceedIfRequired)
{
Boolean result = false; // start out assuming transfer didn't happen
if (this.ValueOf >= Amount)
{
decimal amountRemoved = 0M;
decimal amountDeposited = 0M;
decimal amountLeftToTransfer = Amount;
// try to withdraw exact amount and deposit it into Destination
foreach (Coin.Denomination denominationEnumeral in reversedCoinList)
{
Coin aCoin = new Coin(denominationEnumeral);
amountDeposited = 0M;
amountRemoved = this.removeCoinDenomiation(amountLeftToTransfer, aCoin.DenominationEnumeral);
while (amountDeposited < amountRemoved)
{
Destination.Deposit(aCoin);
amountDeposited += aCoin.ValueOf;
}
amountLeftToTransfer -= amountRemoved;
}
// Nothing left to transfer? Success.
if (amountLeftToTransfer <= 0M)
{
result = true;
}
// withdraw an overage if necessary and deposit it into Destination
else if (amountLeftToTransfer > 0M && ExceedIfRequired)
{
foreach (Coin.Denomination denominationEnumeral in Coin.AllDenominations)
{
while (amountLeftToTransfer > 0M)
{
if (this.coinCount(denominationEnumeral) > 0)
{
this.Withdraw(denominationEnumeral);
Coin aCoin = new Coin(denominationEnumeral);
Destination.Deposit(aCoin);
amountLeftToTransfer -= aCoin.ValueOf;
}
else
{
break; // there are no coins of this denomination: go to next denomination
}
}
}
// Transfer done
result = true;
}
}
else // value of source coinbox less than requested transfer amount: no transfer done
{
result = false;
}
return result;
}
// remove as many of a specified coin as possible, without going over
private decimal removeCoinDenomiation(decimal AmountToRemove, Coin.Denomination denominationEnumeral)
{
var coins =
from aCoin in box
where aCoin.DenominationEnumeral == denominationEnumeral
select aCoin;
var coinArray = coins.ToArray();
decimal amountRemoved = 0M;
decimal amountLeftToRemove = AmountToRemove;
foreach (Coin aCoin in coinArray)
{
if (amountLeftToRemove >= Coin.ValueOfCoin(denominationEnumeral))
{
box.Remove(aCoin);
amountRemoved += aCoin.ValueOf;
amountLeftToRemove -= aCoin.ValueOf;
}
else
{
break;
}
}
return amountRemoved;
}
static void Main(string[] args)
{
PurchasePrice sodaPrice = new PurchasePrice(0.35M);
CanRack sodaRack = new CanRack();
CoinBox changeBox = new CoinBox(new List<Coin> {
new Coin(Coin.Denomination.QUARTER), new Coin(Coin.Denomination.DIME),
new Coin(Coin.Denomination.NICKEL), new Coin(Coin.Denomination.QUARTER),
new Coin(Coin.Denomination.QUARTER), new Coin(Coin.Denomination.DIME) });
Console.WriteLine("Welcome to the .NET C# Soda Vending Machine");
Boolean timeToExit = false;
do
{
sodaRack.DisplayCanRack();
Console.Write("Please insert {0:c} worth of coins: ", sodaPrice.PriceDecimal);
decimal totalValueInserted = 0M;
while (totalValueInserted < sodaPrice.PriceDecimal)
{
Coin coinInserted = null;
while (coinInserted == null)
{
try
{
// get the coin inserted
string coinNameInserted = Console.ReadLine().ToUpper();
coinInserted = new Coin(coinNameInserted);
}
catch (System.ArgumentException)
{
Console.WriteLine("That's not a recognized coin. Please retry.");
}
}
Console.WriteLine("You have inserted a {0} worth {1:c}", coinInserted, coinInserted.ValueOf);
changeBox.Deposit(coinInserted);
// running total of the value of the coins inserted
totalValueInserted += coinInserted.ValueOf;
Console.WriteLine("Total value inserted is {0:c}", totalValueInserted);
}
// select a flavor of soda
Boolean canDispensed = false;
while (!canDispensed)
{
Flavor flavorEnumeral = Flavor.REGULAR;
Boolean flavorChosen = false;
Console.Write("What flavor would you like? : ");
while (!flavorChosen)
{
try
{
// get the flavor request
string flavorName = Console.ReadLine().ToUpper();
// Well, this used to be trouble.
flavorEnumeral = FlavorOps.ToFlavor(flavorName);
flavorChosen = true;
}
catch (System.ArgumentException)
{
Console.WriteLine("That's not a recognized flavor. Please retry.");
}
catch (VENDBADFLAVORException ve)
{
Console.WriteLine(ve.Message);
Console.WriteLine("Please retry");
}
}
if (!sodaRack.IsEmpty(flavorEnumeral))
{
sodaRack.RemoveACanOf(flavorEnumeral);
Console.WriteLine("Thanks, here is your can of {0}.", flavorEnumeral);
canDispensed = true;
}
else
{
Console.WriteLine("We are out of {0}", flavorEnumeral);
}
}
Console.Write("Exit the vending machine? (y/n): ");
string response = Console.ReadLine();
timeToExit = response.Trim().ToUpper().StartsWith("Y");
} while (!timeToExit);
Console.WriteLine("Contents of Coin Box:");
Console.WriteLine("{0}\tHalf Dollar(s)", changeBox.HalfDollarCount);
Console.WriteLine("{0}\tQuarter(s)", changeBox.QuarterCount);
Console.WriteLine("{0}\tDime(s)", changeBox.DimeCount);
Console.WriteLine("{0}\tNickel(s)", changeBox.NickelCount);
Console.WriteLine("{0}\tSlug(s)", changeBox.SlugCount);
Console.WriteLine();
Console.WriteLine("Total value in coin box is {0:c}", changeBox.ValueOf);
}
private static decimal convertEnumeralToDecimal(Coin.Denomination denominationEnumeral)
{
return (decimal)denominationEnumeral / 100M;
}
// decimal value of the specified coin denomination
public static decimal ValueOfCoin(Coin.Denomination denominationEnumeral)
{
return convertEnumeralToDecimal(denominationEnumeral);
}
// put a coin in the coin box
public void Deposit(Coin ACoin)
{
box.Add(ACoin);
}
