static void Main(string[] args)
{
SavingsAccount savingsAccount1 = new SavingsAccount("sv-001", "Sami", 4500);
CheckingAccount checkingAccount1 = new CheckingAccount("chk-001", "Rana", 6500);
savingsAccount1.Deposit(2000);
savingsAccount1.Withdraw(1500);
savingsAccount1.Withdraw(1500);
Console.WriteLine(savingsAccount1.Balance);
checkingAccount1.Deposit(3000);
checkingAccount1.Withdraw(1000);
checkingAccount1.Withdraw(4000);
int no = checkingAccount1.NoOfTransactions;
Console.WriteLine(checkingAccount1.Balance);
Console.ReadKey();
}