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Imagejdevelop wrote in Imagecpp

Cross-references in headers

Can somebody please explain me the correct way to make correct inclusions when class A needs B and class B needs A (two-directional link)?

Here is an example of the source code:

#ifndef coolclassa
#define coolclassa

#include "B.h"

class Aclass
{
public:
	Bclass *buddy;
	Aclass( Bclass *newB ) : buddy( newB )
	{}
};

#endif


#ifndef coolclassb
#define coolclassb

#include "A.h"

class Bclass
{
public:
	Aclass *buddy;
	Bclass( Aclass *newA ) : buddy( newA )
	{}
};

#endif


#include "A.h"
#include "B.h"

int main()
{}


The GCC 2.95 gives me an error - class B is undefined in class A.

LJ Video