Thread: Class Pointers

Hi im having a little problem understanding how class pointers work. Ill explain as best i can what i dont understand...

My problem:

Im trying to do a simple graph like data structure, and am having a few problems understanding how to reference the pointers and use them, also if im using them correctly.

The class A should be able to point to 6 neighbours of class A, each of these neighbours in turn have 6 neighbours and so on.

I have a class A like so

Code:

class A
{
    public:
        A(); 
       ~A();

       A *one, *two, *three, *four, *five, *six;
};

In A how do i reference the one two etc? Im trying something like below but am having problems.

Code:

#include <iostream>
#include "A.h"

using namespace std;

int main(int argc, char *argv[])
{

      A a,b;

      // a's first neighbour points to b's four neighbour
      a.one =  b;
      b.four =  a;
   
      return 0;
}

How do i get the pointer from a.one to point to object b? Am i using the correct notation? Sorry im new to pointers...!

Also have i defined the class A correctly for the problem im doing?

Sorry if this is a little vague!!!

Thanks

ah i see, thanks.

so object 'a' s one pointer refers object 'b' s four pointer?

Code:

                a.one = &b;
	b.four = &a;

yes thats exactly the sort of lattice style structure !

so am i going about this the correct way?

i was thinking of a 2D array of cells to store these in, to help with working out the correct neighbour of each

hm, is that much more difficult to do? im new with C++ (as u may have guessed !)

could you explain it a little more?