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#include <iostream>
#include <cstdlib> //header for dynamic memory management
using namespace std;
void createArrays(int *labs[], int compStation[]); //create dynamic array for lab
void outputLabs(int *labs[], int compStation[]); //display lab
void releaseArrays(int *labs[]); //free array to reallocate space
void logIn(int *labs[], int compStation[]); //allow user login
void logOut(int *labs[], int compStation[]); //allow user logout
void searchLab(int *labs[], int compStation[]); //search data within lab parameters
const int numLabs = 4; //unchangable variable for 4 lab numbers
int main()
{
int *labs[numLabs]; //referencing each lab section
int compStation[numLabs]; //the number of computers in each lab
int choice = -1; //allow user choice
compStation[0] = 5; //initializing 5 computers in lab 1
compStation[1] = 6; //initializing 6 computers in lab 2
compStation[2] = 4; //initializing 4 computers in lab 3
compStation[3] = 3; //initializing 3 computesr in lab 4
createArrays(labs, compStation);
while (choice != 4) //aslong as choice does not equal choice of Quit
{
outputLabs(labs, compStation); //display the lab to user
cout << "Main Menu \n";
cout << "1) User Login \n";
cout << "2) User Logout \n";
cout << "3) Search lab information \n";
cout << "4) Quit program \n";
cin >> choice;
if (choice == 1)
{
logIn(labs, compStation);
}
else if (choice ==2)
{
logOut(labs, compStation);
}
else if (choice==3)
{
searchLab(labs, compStation);
}
else
cout << "You have entered an invalid option" << endl;
}
releaseArrays(labs); //reallocate memory space
return 0;
}
void createArrays(int *labs[], int compStation[])
{
for (int i = 0; i < numLabs; i++)
{
labs[i] = new int[compStation[i]]; //create new dynamic array for each lab section there is a computer station
for (int j =0; j <compStation[i]; j++)
{
labs[i][j] = -1; //simulating an unsed computer
}
}
}
void outputLabs(int *labs[], int compStation)
{
cout << "Your Lab: " << endl;
cout << "Lab # Computer Stations";
for (int i = 0; i < numLabs; i++)
{
cout << i + 1 << " "; //initializing space for format
for (int j = 0; j < compStation[i]; j++)
{
cout << j + 1 << " "; //initializing space
if (labs[i][j] == -1)
{
cout << "empty field"<<endl;
}
else
{
cout << labs[i][j] << endl;
}
}
cout << endl;
}
return;
}
void releaseArrays(int *labs[])
{
for (int i = 0; i < numLabs; i++)
{
delete[] labs[i];
}
return;
}
void logIn(int *labs[], int compStation[])
{
int userID;
int labnumb;
int compnumb;
userID = 0;
labnumb = 0;
compnumb = 0;
while (userID < 1 || userID > 99999) //5 digit user input
{
cout << "Enter the 5 digit user ID for logging in: "<<endl;
cin >> userID;
}
while (labnumb < 1 || labnumb > numLabs)
{
cout <<"Enter the lab number from 1-"<<numLabs << endl;
cin>>labnumb;
}
while (compnumb < 1 || compnumb > compStation[labnumb-1]) //-1 to decrement to reach first array)
{
cout <<"Enter the computer station number: " << "from 1-" <<compStation[labnumb-1]<<endl;
cin>>compnumb;
}
if (labs[labnumb-1][compnumb-1] != -1)
{
cout <<"User"<<labs[labnumb-1][compnumb-1]<<" is alerady logged in" << endl;
return;
}
labs[labnumb-1][compnumb-1] = userID;
return;
}
void logOut(int *labs[], int compStation[])
{
int userID;
userID = 0;
while (userID <1 || userID > 99999)
{
for (int i = 0; i <numLabs; i++)
{
for(int j = 0; j <compStation[i]; j++)
{
if(labs[i][j]==userID)
{
labs[i][j] = -1; //user log off by setting value to -1
cout <<"The User " <<userID<<"is logged off"<< endl;
return;
}
}
}
}
return;
}
void searchLab(int *labs[], int compStation[])
{
int userID;
userID = 0;
while(userID < 1 || userID >99999)
{
cout << "Enter the ID number of the user you wish to find: "<<endl;
cin>>userID;
}
for (int i = 0; i < numLabs; i++)
{
for (int j = 0; j < compStation[i]; j++)
{
if (labs[i][j]==userID)
{
cout << "The User " <<userID<< " is in lab " << i + 1 << " at computer station " << j + 1 << endl;
return;
}
else
cout <<"That user is not lgoged in";
}
}
return;
}
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