public static void Main(string[] args)
{
BankAccount ba;
SavingsAccount sa;
// Display the resulting balance.
Console.WriteLine("Withdrawal: MakeAWithdrawal(ba, ...)");
ba = new BankAccount(200M);
MakeAWithdrawal(ba, 100M);
Console.WriteLine("BankAccount balance is {0:C}", ba.Balance);
Console.WriteLine("Withdrawal: MakeAWithdrawal(sa, ...)");
sa = new SavingsAccount(200M, 12);
MakeAWithdrawal(sa, 100M);
Console.WriteLine("SavingsAccount balance is {0:C}", sa.Balance);
// Wait for user to acknowledge the results.
Console.WriteLine("Press Enter to terminate...");
Console.Read();
}
public static void MakeAWithdrawal(BankAccount ba, decimal amount)
{
ba.Withdraw(amount);
}