// perform transaction; overrides Transaction's pure virtual function
void Withdrawal::execute()
{
bool cashDispensed = false; // cash was not dispensed yet
bool transactionCanceled = false; // transaction was not canceled yet
// get references to bank database and screen
BankDatabase &bankDatabase = getBankDatabase();
Screen &screen = getScreen();
// loop until cash is dispensed or the user cancels
do
{
// obtain the chosen withdrawal amount from the user
int selection = displayMenuOfAmounts();
// check whether user chose a withdrawal amount or canceled
if ( selection != CANCELED )
{
amount = selection; // set amount to the selected dollar amount
// get available balance of account involved
double availableBalance = 45 bankDatabase.getAvailableBalance( getAccountNumber() );
// check whether the user has enough money in the account
if ( amount <= availableBalance )
{
// check whether the cash dispenser has enough money
if ( cashDispenser.isSufficientCashAvailable( amount ) )
{
// update the account involved to reflect withdrawal
bankDatabase.debit( getAccountNumber(), amount );
cashDispenser.dispenseCash( amount ); // dispense cash
cashDispensed = true; // cash was dispensed
// instruct user to take cash
screen.displayMessageLine( "\nPlease take your cash from the cash dispenser." );
} // end if
else // cash dispenser does not have enough cash
screen.displayMessageLine( "\nInsufficient cash available in the ATM."
"\n\nPlease choose a smaller amount." );
} // end if
else // not enough money available in user's account
{
screen.displayMessageLine( "\nInsufficient funds in your account."
"\n\nPlease choose a smaller amount." );
} // end else
} // end if
else // user chose cancel menu option
{
screen.displayMessageLine( "\nCanceling transaction..." );
transactionCanceled = true; // user canceled the transaction
} // end else
} while ( !cashDispensed && !transactionCanceled ); // end do...while
} // end function execute
// performs transaction; overrides Transaction's pure virtual function
void Deposit::execute()
{
BankDatabase &bankDatabase = getBankDatabase(); // get reference
Screen &screen = getScreen(); // get reference
amount = promptForDepositAmount(); // get deposit amount from user
// check whether user entered a deposit amount or canceled
if ( amount != CANCELED )
{
// request deposit envelope containing specified amount
screen.displayMessage(
"\nPlease insert a deposit envelope containing " );
screen.displayDollarAmount( amount );
screen.displayMessageLine( " in the deposit slot." );
// receive deposit envelope
bool envelopeReceived = depositSlot.isEnvelopeReceived();
// check whether deposit envelope was received
if ( envelopeReceived )
{
screen.displayMessageLine( "\nYour envelope has been received."
"\nNOTE: The money deposited will not be available until we"
"\nverify the amount of any enclosed cash, and any enclosed "
"checks clear." );
// credit account to reflect the deposit
bankDatabase.credit( getAccountNumber(), amount );
} // end if
else // deposit envelope not received
{
screen.displayMessageLine( "\nYou did not insert an "
"envelope, so the ATM has canceled your transaction." );
} // end else
} // end if
else // user canceled instead of entering amount
{
screen.displayMessageLine( "\nCanceling transaction..." );
} // end else
} // end function execute
