Addition of pointers

[Roemer Lievaart]

vlcek at mit-caf.MIT.EDU (Jim Vlcek) writes:

>In article <4093 at ficc.uu.net> peter at ficc.uu.net (Peter da Silva) writes:
>>In article <563 at lzaz.ATT.COM>, hutch at lzaz.ATT.COM (R.HUTCHISON) writes:
>>> 	midpoint_pointer = (start_pointer + end_pointer) / 2;
>>
>>You're right. It's a valid operation.

It is not. It is a wrong way to write:
	midpoint_pointer = start_pointer + (end_pointer - start_pointer) / 2;

>In what sense?  It's invalid C, that's for sure.

It's invalid anyway: addition of pointers is in general nonsense.
It may make sense to take the average of two pointers, but not by defining
it in ways of two senseless operations (on pointers): addition and division.
____________________________________________________________________________
Roemer B. Lievaart | "Wa:a:na:a: das Soogo! Schnell!" "GRONF!" "Ich krich die
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