thanks for all yor replys but the point is how can i type the code to say to the program : " if the user inseart the AC\number and the PIN code three times wrong the program reply with messege says' sorry you have exhaust the limited times for logon the card has been confiscated retern back to the customer service' " really i am confused so much about this code please reply me soon thanks btata

now i want to do the security code for atm program on consol application like if the user of the ATM entered the Ac\No and the PIN CODE No 3 times wrong gives messege (the card has been confiscated please go to customer serviec). i make the all program for ATM complately but this point i can not reach it thanks yours btata :((