Hotel Booking system

I am trying to create a ms-dos hotel booking system for college.
It is just an exercise.

I need to mimic checking for room availability. If a certain room is booked for a certain date I need to know.
I am having trouble thinking of the best way to cross reference dates and rooms.

A 3d array? month, date, room?
Seems like the array will get really big

Anybody got any tips on how to structure this...

one way you could do it is create a Class, eg 'Accomodation'
give it attributes required, like

bool is_booked
string date_from
string date_to

then declare an array of objects for this class, eg

Accomodation room[100]

So if I use malloc/realloc I can make that dynamic?
rather then a static [100]

Then I can search by date first, then, if any dates overlap, check each object by room

Code:

---


For(amount of accomodation objects)
  if (dates overlap)
      if (room booked)
                invalid booking
      end
  end

  else

  rooms are bookable, make booking (booking constructor)
end

---

that should work.. seems a lot more efficient on memory.
Thanks rogster

yes but the thing is, in terms of modelling a hotel normally has a fixed number of rooms, and isnt that the point you need...that you want to check the register (read 'the properties of room object' ) of rooms and see if they are available or not, so the room must already be constructed to do that anway..?