public static void Main(string[] args)
{
// open a bank account
BankAccount ba = new BankAccount(20);
ba.Deposit(10);
Console.WriteLine(ba.BankAccountString());
int i = 8;
while (i-- > 0)
{
ba.Withdraw(6);
Console.WriteLine(ba.BankAccountString());
}
Console.WriteLine();
// open a savings account
SavingsAccount sa = new SavingsAccount(0.06, 45);
Console.WriteLine(sa.SavingsAccountString());
sa.AccumulateInterest();
Console.WriteLine(sa.SavingsAccountString());
sa.AccumulateInterest();
Console.WriteLine(sa.SavingsAccountString());
sa.Deposit(10);
Console.WriteLine(sa.SavingsAccountString());
sa.Withdraw(15);
Console.WriteLine(sa.SavingsAccountString());
sa.AccumulateInterest();
Console.WriteLine(sa.SavingsAccountString());
}