public Customer(string str, int n)
{
name = str;
accountID = n;
accounts = new Account.Account[3];
accounts[0] = new SavingAccount();
accounts[1] = new CurrentAccount();
accounts[2] = new USDAccount();
}
static void Main(string[] args)
{
Account a1 = new SavingAccount("1101", "Saving Account", 5000);
a1.Withdraw(1500);
Console.WriteLine();
a1.ShowInfo();
Console.WriteLine();
a1.Withdraw(400);
Console.WriteLine();
a1.ShowInfo();
Console.WriteLine();
Account a2 = new FixedAccount("1101", "Fixed Account", 5000, 2017, 2019);
a2.Withdraw(1000);
Console.WriteLine();
a2.ShowInfo();
Console.WriteLine();
Account a3 = new FixedAccount("1101", "Fixed Account", 2000.00, 2017, 2019);
a3.Withdraw(1000);
Console.WriteLine();
a3.ShowInfo();
Console.WriteLine();
Account a4 = new SpecialAccount("1101", "Special Account", 2000.00);
a4.Withdraw(1900);
Console.WriteLine();
a4.ShowInfo();
Console.WriteLine();
a4.Withdraw(600);
Console.WriteLine();
a4.ShowInfo();
Console.WriteLine();
Account a5 = new Overdraft("1101", "Overdraft", 2000.00, 600.00);
a5.Withdraw(700);
Console.WriteLine();
a5.ShowInfo();
Console.WriteLine();
a5.Withdraw(400);
Console.WriteLine();
a5.ShowInfo();
Console.WriteLine();
}