I coded this ATM queue simulator for my ADS class's project.
What is needed is the following:
The program should ask the user to enter Opening t, Closing t, Customers Arrival t, customers arrival rate per sec and ATM serving rate per sec , then determine by simulating the situation using a queue:
Whether or not there will be a queue;
whether the size of the queue will grow, or remain constant. (I don't know what that suppose to mean?)
If the queue will grow, the program should determine the size of the queue at stopping time.
I completed the code in a simple way without the use of classes or functions.
The problem with my code:
-> When inputting an atm serving every T minutes < customers arrival time every Q minutes <-
the program doesn't work right!
I appreciate any suggestions, comments, problem fixing !
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#include <queue>
#include <cmath>
#include <iostream>
using namespace std;
void main()
{
queue <int> customers;
int OPATMt, OPATMtm, CLATMt, CLATMtm, CusArrt, CusArrtm, CusArrEvtm;
int AccOPtsec, CusArrtsec, CusArrEvtsecCLONE;
int ATMserv , ATMservsec;
cout << "Wlecome to the ATM simulator : \n ________________________________________________ " << endl;
cout << " \n Please do as asked . \n Please input the follwing in 24 - hours format : " << endl;
cout << "----- ----- ----- ----- ----- ----- ----- ----- ----- -----" << endl;
cout << " Enter ATM openning time (hour 'space' minutes) : " << endl;
cin >> OPATMt >> OPATMtm;
cout << "Enter ATM closing time (hour 'space' minutes) :" << endl;
cin >> CLATMt >> CLATMtm;
cout << "Enter Customers arrival time (hour 'space' minutes) :" << endl;
cin >> CusArrt >> CusArrtm;
cout << "Customers arriving every (minutes) :" << endl;
cin >> CusArrEvtm;
cout << "ATM serving cusomers every (minutes) :" << endl;
cin >> ATMserv;
cout << "\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/"<<endl;
//actual serving time
int achoursdif = abs(CLATMt - OPATMt);
int hourtomindiff = achoursdif * 60;
int acmindif = abs(CLATMtm - OPATMtm);
AccOPtsec = (hourtomindiff + acmindif) * 60;
cout << "Acctual op time in secs " << AccOPtsec << endl;
// Customers arrival rate per sec
CusArrEvtsecCLONE = CusArrEvtm * 60;
cout << "Customers arriving every " << CusArrEvtsecCLONE <<" secs"<< endl;
//Customers arrival time in sec
int cusarrivh = abs(CusArrt - OPATMt);
int cusarrivm = abs(CusArrtm - OPATMtm);
CusArrtsec = (cusarrivh * 60 + cusarrivm )* 60;
cout << "customers arriving after " << CusArrtsec <<" secs"<< endl;
// ATM seving per sec
ATMservsec = ATMserv * 60;
cout << "ATM will serve every " << ATMservsec << " secs" <<endl;
// ATM serving every sec counter
static int ATMservCLONE = CusArrtsec;
//customer arrival time counter
static int CAC = CusArrtsec;
// customer sample
int customersample = 0;
//served customers counter
int customersserved = 0;
//ATM started working
cout << "ATM started working :" << endl;
cout << "................................................." << endl;
for (int sec = 0; sec < AccOPtsec; sec++)
{
//customers just arrived ( I'm inserting the same customer over and over because it's a sim, that isn't a problem right!)
if (sec >= CusArrtsec)
{
//ATM is ready to serve
if (sec == ATMservCLONE && sec != CAC || (sec == ATMservCLONE && sec == CAC))
{
//queue is empty
if (sec == CAC && customers.empty())
{
//there is a customer who just arrived
customersserved++;
customersample++;
cout << "customer in action" << endl;
ATMservCLONE += ATMservsec;
CAC = CAC + CusArrEvtsecCLONE;
}
else
//ATM ready to serve and queue is >0
//cutomer came but have to queue
if (sec == CAC && !customers.empty())
{
customers.push(customersample);
customersample++;
customers.pop();
customersserved++;
cout << "customer in action" << endl;
ATMservCLONE +=ATMservsec;
cout << "please queue" << endl;
CAC = CAC + CusArrEvtsecCLONE;
}
else
if (!customers.empty() && sec != CAC)
{
customers.pop();
customersserved++;
cout << "customer in action" << endl;
ATMservCLONE += ATMservsec;
}
} //2nd if
else
{
//ATM not ready but customer arrived
if (sec == CAC && sec != ATMservCLONE)
{
customers.push(customersample);
customersample++;
cout << "New customer, please queue" << endl;
CAC = CAC + CusArrEvtsecCLONE;
}
//ATM not ready and no new customers
//else
//cout << "Please continue to queue until ATM is available." << endl;
}
//waiting for customers
} // 1st if
} // for
cout << "------------------------------------------------------" << endl;
cout << "It's closing time AT " << CLATMt << " : " << CLATMtm << endl;
cout << "The ATM worked for " << AccOPtsec << " seconds." << endl;
cout << "The total number of customers is : " << customersample <<" customer."<< endl;
cout << "Customer served : " << customersserved << " customers." <<endl;
// If there was a queue or not
if (CusArrEvtm < ATMserv)
{
cout << "Customers had to queue." << endl;
}
else
{
cout << "There was no need for customers to queue." << endl;
}
cout << "Customers still queueing : " << customers.size() << endl;
system("pause");
}
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