Hi Jerry.

08-Sep-03 09:15:41, Jerry Coffin wrote to you

 JC> This is NOT the case with the macro itself though -- it _has_ the
 JC> value 0 to start with. The only tricky part is if it's 0 cast to
 JC> pointer to void; in that case, even though we know it has the
 JC> value 0, it could be impossible to actually retrieve that value
 JC> (though somehow this starts to remind me of the old question of
 JC> whether a tree falling in the forest makes any sound if there's
 JC> nobody there to hear it). Later, Jerry.

In DOS tiny memory model (or near pointers).  NULL is DS:0  (or cs:0 for
function pointers)

#include 
main(){
 void far*  fp=NULL;
 void near* np=NULL;

 printf("Fp=NULL fp: %Fp\n",fp);
 printf("np=NULL np:      %Np\n",np);
 fp=np;
 printf("fp=np   np: %Fp\n",fp);
 }


Fp=NULL fp: 0000:0000
np=NULL np:      0000
fp=np   np: 2C2C:0000


 -=> Bye <=-

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