Question

C++ program that could be used to track, by lab, who is logged into which computer

1. |15 points| Suppose 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 1-4 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 number are transmitted to your system. For instance, if user 49193 logs onto the station 2 in lab 3, then your system receives (49193, 2, 3) as input data. Similarly, when a user logs off a station, then 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 the station 2 in lab 3 and user 99577 is logged into the station 1 of lab 4, then your system should display the following: Lab Number Computer Stations 1: empty 2: empty 3: empty 4: empty 5: empty l: empty 2: empty 3: empty 4: empty 5: empty 6: empty 1: empty 2: 49193 3: empty 4: empty 1: 995772: empty 3: empty 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 should be updated. Also, write a search option so that the administrator can type in a user ID and the system will output what lab and station number that user is logged into or None if the user ID is not logged into any computer station. You should use a fixed array of length 4 for the labs. Each array entry points to a dynamic array that stores the user login information for each respective computer station Sample Input and Output: Lab # Con!puter Stations 1: empty 2: empty 3: empty 4: empty 5: empty l: empty 2: empty 3: empty 4: empty 5: epty 6: empty 1: empty 2: empty 3: empty 4: empty 1: empty 2: empty 3: empty MAIN MENU 0) Quit 1) Simulate login 2) Simulate logoff 3) Search 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): 2 LAB STATUS Lab # Computer Stations 1: empty 2: empty 3: empty 4: empty 5: empty 1: empty 2: 12345 3: empty 4: empty 5: empty 6: empty 1: empty 2: empty 3: empty 4: empty 1: empty 2: empty 3: empty 2 MAIN MENU 0) Quit 1) Simulate login 2) Simulate logoff 3 Search Enter the 5 digit ID number of the user logging in: 49193 Enter the lab number the user is logging in from (1-4): 3 Enter computer station number the user is logging in to (1-5): 3 LAB STATUS Lab # Computer Stations 1: empty 2: empty 3: empty 4: empty 5: empty 1: empty 2: 12345 3: empty 4: emptv 5: empty 6: empty 1: empty 2: empty 3: 49193 4: empty 1: empty 2: empty 3: empty MAIN MENU 0) Quit 1) Simulate login 2) Simulate logoff 3) Search 3 Enter the 5 digit ID number of the user to find: 12345 User 12345 is in lab 2 at computer 2 0) Quit 1 Simulate login

Answer 1

//code self understandable

#include <bits/stdc++.h>
#define LAB_NO 4
#define FIRST_LAB 5
#define SECOND_LAB 6
#define THIRD_LAB 4
#define FOURTH_LAB 3
using namespace std;
void print(int** lab)
{
   cout<<"LAB STATUS"<<endl;
   cout<<"LAB# "<<"Computer Stations"<<endl;
   cout<<"1 ";
   for(int i=0;i<5;i++)
   {
       if(lab[0][i]==0)
       cout<<i+1<<": empty ";
       else
       cout<<i+1<<": "<<lab[0][i]<<" ";
   }
   cout<<endl;
   cout<<"2 ";
   for(int i=0;i<SECOND_LAB;i++)
   {
       if(lab[1][i]==0)
       cout<<i+1<<": empty ";
       else
       cout<<i+1<<": "<<lab[1][i]<<" ";
   }
   cout<<endl;
   cout<<"3 ";
   for(int i=0;i<THIRD_LAB;i++)
   {
       if(lab[2][i]==0)
       cout<<i+1<<": empty ";
       else
       cout<<i+1<<": "<<lab[2][i]<<" ";
   }
   cout<<endl;
   cout<<"4 ";
   for(int i=0;i<FOURTH_LAB;i++)
   {
       if(lab[3][i]==0)
       cout<<i+1<<": empty ";
       else
       cout<<i+1<<": "<<lab[3][i]<<" ";
   }
   cout<<endl;
}
void search(int user_id,int** lab)
{
   for(int i=0;i<FIRST_LAB;i++)
   {
       if(lab[0][i]==user_id)
       {
           cout<<"User "<<user_id<<" is in lab 1 at computer "<<i+1<<endl;
           return;
       }
   }
   for(int i=0;i<SECOND_LAB;i++)
   {
       if(lab[1][i]==user_id)
       {
           cout<<"User "<<user_id<<" is in lab 2 at computer "<<i+1<<endl;
           return;
       }
   }
   for(int i=0;i<THIRD_LAB;i++)
   {
       if(lab[2][i]==user_id)
       {
           cout<<"User "<<user_id<<" is in lab 3 at computer "<<i+1<<endl;
           return;
       }
   }
   for(int i=0;i<FOURTH_LAB;i++)
   {
       if(lab[3][i]==user_id)
       {
           cout<<"User "<<user_id<<" is in lab 4 at computer "<<i+1<<endl;
           return;
       }
   }
   cout<<"User "<<user_id<<" is not present in any of the labs"<<endl;
   return;
}
int main() {
   // your code goes here
   int** lab=new int*[4];
   lab[0]=new int[FIRST_LAB];
   lab[1]=new int[SECOND_LAB];
   lab[2]=new int[THIRD_LAB];;
   lab[3]=new int[FOURTH_LAB];
   memset(lab[0],0,FIRST_LAB*sizeof(int));
   memset(lab[1],0,sizeof(lab[1]));
   memset(lab[2],0,sizeof(lab[2]));
   memset(lab[3],0,sizeof(lab[3]));
   while(1<2)
   {
       cout<<"MAIN MENU"<<endl;
       cout<<")0 QUIT"<<endl<<"1) SIMULATE LOGIN"<<endl<<"2) SIMULATE LOGOFF"<<endl<<"3) SEARCH"<<endl;
       int choice;
       cin>>choice;
       if(choice==0)
       break;
       else if(choice ==1)
       {
           int user_id,lab_no,computer_no;
           cout<<"Enter the 5 digit ID number of the user logging in ";
           cin>>user_id;
           cout<<"Enter the lab number the user is logging in from(1-4) ";
           cin>>lab_no;
           cout<<"Enter the computer station number the user is logging in to(1-6) ";
           cin>>computer_no;
           lab[lab_no-1][computer_no-1]=user_id;
           print(lab);

       }
       else if(choice==2)
       {
           int lab_no,computer_no;
           cout<<"Enter the lab number the user is logging of from(1-4) ";
           cin>>lab_no;
           cout<<"Enter the computer station number the user is logging of to(1-6) ";
           cin>>computer_no;
           lab[lab_no-1][computer_no-1]=0;
           print(lab);
       }
       else if(choice==3)
       {
           int user_id;
           cout<<"Enter the 5 digit ID number of the user to find ";
           cin>>user_id;
           search(user_id,lab);
       }
   }
   return 0;
}