help with people counting program..

I'm trying to to a simple people counting program.
The scenerio is that is a passageway to a room and i wanted to count how many people going in and how many people going out.

Thank you very much if u can help me..

Well, there are some things that will matter when you write this algorithm:
- how many people will be in the hallway at once?
- who walks the fastest/slowest?
- how long does it take for these people to go from one room to another?
- how many people can be in a room at once?
Answer those questions and work out the algorithm from there.

Hello, I saw your post and prepared this code for you , it's not complete yet, but it is up to you to finish the simulation of the counting:

Code:

#include <iostream>
#include <ctime>
#include <cstdlib>

#define _IN    200         //STATUS GOING IN
#define _OUT   201        //STATUS GOING OUT
#define _STAY  300        //STATUS ON THE ROOM

using namespace std;

const int iPeople = 100;        //# of People
const int iSTAYallowed  = 75;       //Max allowed to STAY

void Start();			//Initialize Random Speeds
void Simulation(void);        //Simulation
void Update();		         //Update to the Display

struct Person			//The person(s)
{
	int speed;
	int status;
}People[iPeople];

struct _Display			//Update Status
{
	int iPeoIn;
	int iPeoOut;
	int iPeoStay;
}Display;



int main()
{
	Start();

	cout<<"\nPress [Enter] to start Simulation\n"<<endl;

	cin.get();

	Simulation();

	system("PAUSE");
	return 0; //or exit(0);
}

void Simulation(void)
{
	/*

    CODE HERE:
		
	*/
}

void inline Update()
{
	int in =0,
		out=0,
		stay=0;

	for(int x=0; x<=iPeople; x++)
	{
		if(People[x].status == _OUT)
		{
			out++;
		}

		if(People[x].status == _IN)
		{
			in++;
		}

		if(People[x].status == _STAY)
		{
			stay++;
		}
		
		Display.iPeoIn = in;
		Display.iPeoOut = out;
		Display.iPeoStay = stay;
	}
}

void Start()
{
	srand( (unsigned) time(NULL) );         //Random Seed

	for(int x=0; x<=iPeople; x++)          //Assinging Speeds and Status
	{
		People[x].speed = rand()%5000;
		People[x].status = _OUT;
	}
}

I already declared almost everything that you need, hope it helps