public void deleteInventory() {
        Scanner sc = new Scanner(new InputStreamReader(System.in));
        String input = "";
        String code = "";
        Node target;

        boolean exists=false;
        while (!exists) {
            System.out.print ("Input Inventory Code: ");
            code = sc.next();

            if (code.equals("\\c")) return;

            try {
                Integer.parseInt (code);
            } catch (NumberFormatException e) {
                System.out.println ("Inventory code is invalid.");
                continue;
            }

            target = searchInventory (code);
            if (target==null) {
                System.out.println ("Inventory item does not exist.");
            } else exists=true;
        }

        // Working code
        System.out.println ("Are you sure you want to delete this entry? [y/n] : ");
        input = sc.next();
        if (input.equals("y")) {
            target = searchInventory (code);
            if (top.getInventoryCode().equals(input)) {
                Node temp = top.getNext();
                top.setNext (null);
                top=temp;
            } else if (target.getNext().getNext()==null) { // last node
                target.setNext(null);
            } else { // target==pointer
                Node temp=target.getNext();
                target.setNext (temp.getNext());
                temp.setNext (null); // "Disconnects" deleted node
            }
            System.out.println ("Item #" + code + " has successfully been deleted.");
        } else if (input.equals("n")) {
            System.out.println ("Transaction cancelled.\n");
            return;
        } else return;