Header A needing Header B needing Header A.

Posted on 2008-06-16
Last Modified: 2010-04-21

What is the best/tidiest way of removing the problem of "Header A" needing something from "Header B" which in turn needs something from "Header A".

Question by:Unimatrix_001
LVL 45

Accepted Solution

sunnycoder earned 250 total points
ID: 21794986
One way is forward declaration. If a type uses only pointers of another type, you can use a fwd declaration.
Else you can divide the contents into multiple header files ... say header C and move dependencies to it. That should break the cycle.

If you can provide details of your exact need, may be we can help better

LVL 86

Assisted Solution

jkr earned 250 total points
ID: 21795007
Usually forward declarations (see I.e.


class B; // forward declaration

class A {


B* b;



#include "a.h"

class B: {


A* a;


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Author Closing Comment

ID: 31467672
Thanks both. :)

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