You run four computer labs. Each lab contains computer stations that are numbere
ID: 3880722 • Letter: Y
Question
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.
Utilize the following functions to create the program:
// Shows the status of all labs (who is logged into which computer).//
void sl(IntPtr L[], int LS[]);
void lon(IntPtr L[], int LS[]); //Simulates a user login by asking for the login info from the console.//
void lo(IntPtr L[], int LS[]); //Searches through the arrays for the input user ID and if found logs that user out.
void lookup(IntPtr L[], int LS[]); //Searches through the arrays for the input user ID and if found outputs the station number.
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
Explanation / Answer
#include <iostream>
#include <cstdlib>
using namespace std;
int **dynArray(int row, int cols)
{
int **myPtr;
int lab[4];
myPtr = new int *[row];
for(int i = 0; i < row; i++)
myPtr[i] = new int[lab[i]];
for(int i = 0; i<row ; i++)
if(myPtr[i] == 0)
cout<<"empty";
return myPtr;
}
void getinput(int ID,int &Station,int &labnumb)
{
cout<<" Enter your ID number: "<<endl;
cin>>ID;
cout<<" Enter your station number: "<<endl;
cin>>Station;
cout<<" Enter your lab number: "<<endl;
cin>>labnumb;
return;
}
void logout(int ID,int &Station,int &labnumb)
{
cout<< "You have been logged out."<<endl;
return;
}
void login(int **dynArray,int ID,int &Station,int &labnumb)
{
dynArray[labnumb][Station] = ID;
return;
}
bool search(int **dynArry,int ID,int &row,int &cols,int lab[])
{
cout<<"Enter user ID to check: "<<endl;
cin>>ID;
bool found = false;
for(int i = 0; i < row;i++)
for(int j = 0; j < lab[i];j++)
if(ID == dynArry[i][j])
{
found = true;
row = i;
cols = j;
}
return found;
}
void Menu(int **dynArray,int ID,int &Station,int &labnumb,int lab[])
{
int choice;
cout<<"Enter 1 for login, 2 for search,3 for exit. "<<endl;
cin>>choice;
if(choice == 1)
login(dynArray,ID,Station,labnumb);
if(choice == 2)
search(dynArray,ID,Station,labnumb,lab);
if(choice == 3)
exit(0);
}
int main()
{
int lab[4];
lab[0] = 5;
lab[1] = 6;
lab[2] = 4;
lab[3] = 3;
int **labmain;
labmain = new int*[4];
for(int i = 0; i <4 ; i++)
{
*(labmain + i) = new int;
}
labmain = dynArray(4,7);
int ID,Station,labnumb;
Menu(dynArray,ID,Station,labnumb,lab);
system("PAUSE");
return 0;
}
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.