public static void Main()
int amount = 8080, deposit, withdraw;
int choice, pin = 8, x = 8;
Console.WriteLine("Enter Your Pin: ");
pin = int.Parse(Console.ReadLine());
Console.WriteLine("WELCOME TO QQQ ATM BANKING \n");
Console.WriteLine("1. Balance Inquiry \n");
Console.WriteLine("2. Withdraw \n");
Console.WriteLine("3. Deposit \n");
Console.WriteLine("4. Change Pin \n");
Console.WriteLine("5. Bill \n");
Console.WriteLine("x. Cancel");
Console.WriteLine("SELECT A TRANSACTION : ");
choice = int.Parse(Console.ReadLine());
Console.WriteLine("\n YOUR BALANCE IS : {0} ", amount);
Console.WriteLine("\n ENTER AMOUNT : ");
withdraw = int.Parse(Console.ReadLine());
Console.WriteLine("\n PLEASE ENTER AMOUNT ABOVE 100");
else if (withdraw > (amount - 1000))
Console.WriteLine("\n SORRY! INSUFFICENT BALANCE");
amount = amount - withdraw;
Console.WriteLine("\n\n PLEASE COLLECT CASH");
Console.WriteLine("\n CURRENT BALANCE IS : {0}", amount);
Console.WriteLine("\n ENTER DEPOSIT AMOUNT");
deposit = int.Parse(Console.ReadLine());
amount = amount + deposit;
Console.WriteLine("THE AMOUNT HAS BEEN DEPOSITED SUCCESSFULLY..");
Console.WriteLine("YOUR BALANCE IS : {0}" , amount);
Console.WriteLine("\n Want to change your pin? : ");
Console.WriteLine("Enter previous pin : ");
Console.WriteLine("\n Enter new pin : ");
Console.WriteLine("\n Your pin is changed.");
Console.WriteLine("\n Proceed to transaction");
Console.WriteLine("Enter biller name ( globe, cepalco, parasat, credit card : ");
Console.WriteLine("\n Enter bill amount");
Console.WriteLine("YOUR BALANCE IS : {0} " , amount );
Console.WriteLine("THANK YOU FOR USING QQQ ATM BANKING");