static void Main(string[] args)
{
const decimal OPENING_BALANCE = 55m;
const decimal MONTHLY_INTEREST = 0.0033m;
//add monthly interest to savings account and display balance
Savings savings = new Savings(OPENING_BALANCE);
savings.AddMonthlyInterest(MONTHLY_INTEREST);
savings.ShowBalance();
//deduct the monthly check fee from the account balance and display balance
Checking checking = new Checking(OPENING_BALANCE);
checking.DeductServiceCharge();
checking.ShowBalance();
//show the 2 owners of the joint account, plus add interest to the balance and display the balance
JointSavings jointSavings = new JointSavings("Bob", "Martha", OPENING_BALANCE);
jointSavings.ShowOwners();
jointSavings.AddMonthlyInterest(MONTHLY_INTEREST);
jointSavings.ShowBalance();
Console.ReadKey();
}
