// BalanceInquiry.cs
// Represents a balance inquiry ATM transaction
public class BalanceInquiry : Transaction
{
   // five-parameter constructor initializes base class variables
   public BalanceInquiry( int userAccountNumber, 
      Screen atmScreen, BankDatabase atmBankDatabase )
      : base( userAccountNumber, atmScreen, atmBankDatabase ) {}

   // performs transaction; overrides Transaction's abstract method
   public override void Execute()
   {
      // get the available balance for the current user's Account
      decimal availableBalance = 
         Database.GetAvailableBalance( AccountNumber );

      // get the total balance for the current user's Account
      decimal totalBalance = Database.GetTotalBalance( AccountNumber );

      // display the balance information on the screen
      UserScreen.DisplayMessageLine( "\nBalance Information:" );
      UserScreen.DisplayMessage( " - Available balance: " );
      UserScreen.DisplayDollarAmount( availableBalance );
      UserScreen.DisplayMessage( "\n - Total balance: " );
      UserScreen.DisplayDollarAmount( totalBalance );
      UserScreen.DisplayMessageLine( "" );
   } // end method Execute
} // end class BalanceInquiry

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