[ILUG] C puzzle

[John Allen]

On Tuesday 06 July 2004 12:00, Paul Jakma wrote:
> On Tue, 6 Jul 2004, Philip Reynolds wrote:
> > You need to use a temporary variable, to allow the use of free() or
> > removal of an element in the list.
>
> Indeed. the problem is trying to stuff it into the for loop so that
> macro will still work :)
>
> > #define LIST_LOOP(L, V, N, temp) \
> > 	for ((N) = (L)->head; \
> > 		(N) && ((temp) = (N)->next); \
> > 		(N) = (temp))
> >
> > Something like the above.
>
> Nah, that breaks the macro.
>

The correct solution is obviously C++. Macros is bad.

-- 
John Allen,                          mailto:john.allen at dublinux.net
MandrakeClub Silver Member.          http://www.dublinux.net

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