You run four computer labs. Each lab contains computer stations that are numbered as shown in the table below:-

Lab Number Computer Station Numbers 1 1-5 2 1-6 3 1-4 4 1-3 Each user has a unique five-digit ID Number. Whenever a user logs on, the user's ID, Lab Number, and the computer station are transmitted to your station. For example, if user 49193 logs onto station 2 in Lab 3, your system receives (49193, 2, 3) as input data. Similarly, when a user logs off a station, your system receives the Lab Number and computer station number.

Write a C++ program that could be used to track, by lab, which user is logged onto which computer. For example, if user 49193 is logged into station 2 in lab 3 and user 99577 is logged into station 1 of lab 4, then your system might display the following:-

Lab Number Computer Stations

1 1: empty 2: empty 3: empty 4: empty 5: empty

2 1: empty 2: empty 3: empty 4: empty 5: empty 6: empty

3 1: empty 2: 49193 3: empty 4: empty

4 1: 99577 2: empty 3: empty

Task:-

1. Create a menu that allows the administrator to simulate the transmission of information by manually typing in the login or logoff data. Whenever someone logs in or out, the display table should be updated.

2. Write a search option so the administrator can type in a user Id and the system will output what Lab Number and station number the user is logged into, or "None" if the user Id is not logged into any computer station.

You should use a linked list to store the list of user ID's for each computer station. The node for the lists should contain the station number and user ID of the person logged in on that station. If nobody is logged on to a computer station, then no entry should exist in the linked list for that computer station.

Sample Output:- (User input is in bold and Italics)

LAB STATUS Lab # Computer Stations 1 1: empty 2: empty 3: empty 4: empty 5: empty 2 1: empty 2: empty 3: empty 4: empty 5: empty 6: empty 3 1: empty 2: empty 3: empty 4: empty 4 1: empty 2: empty 3: empty

MAIN MENU 0) Quit 1) Simulate login 2) Simulate logoff 3) Search 1 Enter the 5 digit ID number of the user logging in: 12345 Enter the lab number the user is logging in from (1-4): 2 Enter computer station number the user is logging in to (1-6): 3

LAB STATUS Lab # Computer Stations 1 1: empty 2: empty 3: empty 4: empty 5: empty 2 1: empty 2: empty 3: 12345 4: empty 5: empty 6: empty 3 1: empty 2: empty 3: empty 4: empty 4 1: empty 2: empty 3: empty

MAIN MENU 0) Quit 1) Simulate login 2) Simulate logoff 3) Search 2 Enter the 5 digit ID number of the user to find: 12345 User 12345 is logged off.

LAB STATUS Lab # Computer Stations 1 1: empty 2: empty 3: empty 4: empty 5: empty 2 1: empty 2: empty 3: empty 4: empty 5: empty 6: empty 3 1: empty 2: empty 3: empty 4: empty 4 1: empty 2: empty 3: empty

MAIN MENU 0) Quit 1) Simulate login 2) Simulate logoff 3) Search

Remember to use a LINKED LIST to store the list of user ID's for each computer station. The node for the lists should contain the station number and user ID of the person logged in on that station. If nobody is logged on to a computer station, then no entry should exist in the linked list for that computer station. Furthermore, also write explnatory comments next to or on each line of code.