Bug 823

Steps to Reproduce
1. Open the HMS.
2. Choose option 2 to 'Create new account'.
3. Enter a username and password separated by a slash (e.g., username/password).
4. After successful account creation, navigate to the main menu.
5. Choose option 6 to 'Log out'.
6. You will be taken back to the main login screen.
7. Choose option 1 to 'Login'.
8. Enter the same username and password used for account creation.

Screen dump:

| Welcome to the Hospital Management System (HMS) |
| Please select the following options: |
| 1. Login |
| 2. Create new account |
2
| <Create new account> |
| Please input username and password (separated by /)|
| or enter 'q' to quit. |
kenny/p@ssw0rd
| Welcome to the Hospital Management System (HMS) |
| Please select the following options: |
| 1. Make an appointment |
| 2. Take A&E treatment |
| 3. Check your sick history |
| 4. Check your current Ticket |
| 5. See Doctor |
| 6. Log out |
| Current time: 2023/11/10 12:00:00
6
logging out
| Welcome to the Hospital Management System (HMS) |
| Please select the following options: |
| 1. Login |
| 2. Create new account |
1
| <Login existing account> |
| Please input username and password (separated by /)|
| or enter 'q' to quit. |
kenny/p@ssw0rdd
| Invalid username or password. Please try again. |