In article <swutch@kaa.gr.osf.org>,
�amonn McManus <emcmanus@gr.opengroup.org> wrote:
>with the exciting new feature you can write:

>    switch (thing) {
>    case one:
>	int x = whatever();
>	use(x);
>	break;
>    case two:
>	int x = maybe();
>	use(x);
>	break;
>    }

>Except I very much hope that you can't, since that would be a multiple
>declaration of x.

I think you are correct.

>Presumably the new C will allow the first
>declaration but require the `int' to be left off the second, turning
>it back into a lowly statement.

Yes.

>That's terrible programming practice of
>course because you're having the meaning of one switch case depend on
>the way another one was written.

So, what you might do is
	switch (thing) {
	int x;
	case one:
	...
	}
and, of course, you can't count on x being initialized, because you'll
be jumping in past the initializer.

>Nonetheless the new C feature is easy to implement and understand and is
>fairly often useful.

That's my reading of it.  I still slightly prefer blocks, so I can
clearly end the scope of a declaration, but that's just a matter
of personal style.

-s
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