Question

Computer Labs Write a Computer Labs program to store the list of user IDs for each computer station using a linked list. Problem Description: You run four computer labs. Each lab contains computer stations that are numbered as shown in the table below: Lab Number Computer station Numbers 1-5 2 1-6 1-4 4 1-3 Each user has a unique five-digit ID number. Whenever a user logs on, the User's ID, labnumber, and the computer station number are transmitted to your system. For example, ifuser 56283 logs onto station 2 in lab 3, then your system receives (56283, 2, 3) as input data. Similarly, when auser logs off a station, then your system receives the lab number and computer station number. Write a computer program that could be used to track, by lab, which user is logged onto which computer. For example, if user 56283 is logged into station 2 in lab 3 and user 67315 is logged into station 1 of lab 4 then your system might display the following: Lab number Computer Stations Numbers 1: empty 2: empty 3: empty: 4: empty: 5: empty 1: empty 2: empty 3: empty: 4: empty: 5: empty 6: empty 1: empty 2: 56283 3: empty: 4: empty 1: 67315 2: empty 3: empty Create a menu allows the administrator to simulate the transmission of information by manually typing in the login or log off data. Whenever someone logs in or out, the display should be

Please post the code in c++!

Answer 1

Executable code:

#include <iostream>

#include <iomanip>

using namespace std;

void init(int *labs[], int num_stations[], int number_used);

void menu(int *labs[], int num_stations[], int number_used);

/*STATION*/

void track_display(int *labs[], int num_stations[], int number_used);

void delete_array(int *labs[], int num_stations[], int number_used);

void log_on(int *labs[]);

void log_off(int *labs[]);

void info_transmission(int *labs[], int ID, int lab, int mystat);

/*MAIN METHOD*/

int main()

{

const int num_labs = 4;

int num_stations[num_labs] = {5,6,4,3};

  
int *labs[num_labs];

init(labs, num_stations, num_labs);

menu(labs, num_stations, num_labs);

return 0;

}

void init(int *labs[], int num_stations[], int number_used)

{

for (int s = 0; s < number_used; s++)

{

labs[s] = new int[num_stations[s]]();

}

}

void menu(int *labs[], int num_stations[], int number_used)

{

int option;

do

{

cout << "\n Display Chart \n"

<< "Pick 0 to quit \n"

<< "Pick 1 to simulate login \n"

<< "Pick 2 for simulate logout \n"

<< "Pick 3 for search \n"

<< "Enter your option and press return: ";

cin >> option;

switch(option)

{

case 0:

track_display(labs, num_stations, number_used);

break;

case 1:

log_on(labs);

break;

case 2:

log_off(labs);

break;

case -1:

cout << "End of Program. \n";

delete_array(labs, num_stations, number_used);

break;

default:

cout << "Not a valid option. \n"

<< "Pick again.\n";

}

}

while (option != -1);

}

void track_display(int *labs[], int num_stations[], int number_used)

{

cout << endl << setw(12) << left << "Lab Number" << "Computer Stations\n";

for(int m = 0; m < number_used; m++)

{

cout << setw(12) << left << m+1;

for (int s = 0; s < num_stations[m]; s++)

{

cout << s+1 << ": ";

if (labs[m][s] == 0)

{

cout << setw(6) << left << "empty";

}

else

{

  

cout << setw(6) << labs[m][s];

}

}

cout << endl;

}

}

void delete_array(int *labs[], int num_stations[], int number_used)

{

for (int s = 0; s < number_used; s++)

{

delete []labs[s];

}

}

void log_on(int *labs[])

{

int ID, lab, mystat;

  

cout << "Enter the 5 digit ID number of the user logging in: ";

cin >> ID;

cout << "Enter the lab number the user is logging in from (1-4): ";

cin >> lab;

cout << "Enter computer station number the user is logging in to: ";

cin >> mystat;

info_transmission (labs, ID, lab-1, mystat-1);

cout << "Successfully log on";

}

void log_off(int *labs[])

{

int lab, mystat;

cout << "Enter computer station number the user is logging in to: ";

cin >> lab;

cout << "Enter the lab number the user is logging in from (1-4): ";

cin >> mystat;

info_transmission (labs, 0, lab-1, mystat-1);

cout << "Effectively log off";

}   

void info_transmission(int *labs[], int ID, int lab, int mystat)

{

labs[lab][mystat] = ID;

}

Output: