static void Main()
{
DepositAccount myDeposit = new DepositAccount(Customer.Individual, 0, 1);
myDeposit.Deposit(2500);
Console.WriteLine("Balance: {0}", myDeposit.Balance);
Console.WriteLine("Interest: {0}", myDeposit.CalculateInterest(12));
Console.WriteLine("... Withdrawing $2000 ...");
myDeposit.Withdraw(-2000);
// myDeposit.Withdraw(-2800); - this will throw exeption
Console.WriteLine("New Balance {0}", myDeposit.Balance);
Console.WriteLine("new Interest: {0}", myDeposit.CalculateInterest(12));
}