#if foo vs #if defined(foo)

[jso at edison.UUCP]

In article <379 at twitch.UUCP>, grt at twitch.UUCP ( G.R.Tomasevich) writes:
> #if squat||foo
> 
> if the 'cc' command includes either '-Dsquat' or '-Dfoo', then 'yes' is
> selected, else 'no' is selected.  E.g.: 'cc -Dfoo -E c.c'
> 	George Tomasevich, ihnp4!twitch!grt

Fine, since -Dfoo is the same as '#define foo 1', but what about
#define	foo
or
#define	foo	something

Do either of these work with
#if	squat||foo
?  I doubt it, since the #if is a *numeric* if.

	John Owens @ General Electric Company	(+1 804 978 5726)
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