PSEUDOCODE

ATM MACHINE'S PSEUDO CODE (CHECK BALANCE, WITHDRAW, AND EJECT CARD OPTION)
BY: JOHN KAISER G. LLARVES

    VARIABLES:
    CARD
    CHOICESCREEN
    CURRENTBALANCE
    NEWBALANCE
    WITHDRAWAMOUNT
    BALANCE
    BALCHOICE
    NEWBALCHOICE
    EXITNEWBAL
    EXITINSUFFBAL


    BEGIN
    WHILE MAIN MENU:
                SHOW PLEASE INSERT CARD
                    INPUT: INSERT CARD
                        PROCESS: READ CARD AND FIND DATABASE
                            IF CARD VALID
                                {
                                    INPUT: PLEASE ENTER PIN
                                    IF PIN IS VALID
                            {
                                INPUT: WHAT WOULD YOU LIKE TO DO?: \n1. Check Balance\n2. Withdraw\n3. Eject Card
                                IF CHOICE == 1
                            {
                                OUTPUT: REMAINING BALANCE: CURRENTBALANCE \nWHAT WOULD YOU LIKE TO DO?\n1. Return\n2. Withdraw Balance
                                    IF BALCHOICE == 1
                                    {
                                        CHOICESCREEN
                                    }
                                    ELSE IF BALCHOICE == 2
                                    {
                                        LESSEN THE BALANCE AND DISPLAY CURRENTBALANCE
                                        DISPLAY WHAT WOULD YOU LIKE TO DO? \n1. Return\nEject Card
                                            IF NEWBALCHOICE == 1
                                            {
                                                CHOICESCREEN
                                            }
                                            ELSE IF CHOICE == 2
                                            {
                                                EJECT CARD
                                                    ENDIF
                                            }
                                            ELSE
                                            {
                                                DISPLAY: Please Choose a valid number!
                                            }
                                                ENDIF
                                    ELSE
                                        {
                                            DISPLAY PLEASE CHOOSE A VALID OPTION!
                                        }
                                    }
                                    ENDIF
                            }

                            ELSE IF CHOICE == 2
                            {
                                DISPLAY CURRENTBALANCE \nWHAT WOULD YOU LIKE TO DO?
                                INPUT AMOUNT TO WITHDRAWAMOUNT
                                CHECK DATABASE IF BALANCE IS SUFFICIENT
                                    IF CURRENTBALANCE >= WITHDRAW AMOUNT
                                    {
                                        YOU HAVE SUCCESSFULLY WITHDREW {WITHDRAW AMOUNT}, YOUR NEW BALANCE IS: {NEW BALANCE}
                                        WHAT WOULD YOU LIKE TO DO? \n1. Return\n2. Eject Card
                                            IF EXITNEWBAL == 1
                                            {
                                                CHOICESCREEN
                                            }
                                            ELSE IF EXITNEWBAL == 2
                                            {
                                                EJECT CARD
                                            }
                                            ELSE
                                            {
                                                DISPLAY PLEASE SELECT A VALID OPTION!
                                            }
                                            ENDIF
                                    }
                                    ELSE IF CURRENTBALANCE < WITHDRAWAMOUNT
                                        {
                                            DISPLAY SORRY YOU HAVE INSUFFICIENT FUNDS
                                            WHAT WOULD YOU LIKE TO DO? \n1. Return\n2. Eject Card
                                            IF EXITINSUFFBAL == 1
                                            {
                                                CHOICESCREEN
                                            }
                                            ELSE IF EXITINSUFFBAL == 2
                                            {
                                                EJECT CARD
                                            }
                                            ENDIF
                                        }
                                    ELSE
                                    {
                                        DISPLAY PLEASE CHOOSE A VALID OPTION!
                                    }
                                    ENDIF
                            }
                            ELSE IF CHOICE == 3
                            {
                                EJECT CARD
                                }


                            ELSE IF PIN IS NOT VALID USER IS GIVEN 4 MORE TRIES
                                IF USER DOES NOT PASS THE AUTHENTICATION PROCESS
                                    {
                                        DISPLAY PLEASE TRY AGAIN IN 24HRS
                                        GO BACK TO MAIN MENU
                                    }
                                    ENDIF
                        }


                    ELSE
                        OUTPUT: PLEASE TRY ANOTHER CARD AND TRY AGAIN
                        MAIN MENU

                    ENDIF
            END