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From: risto@tuura.UUCP (Risto Lankinen)
Newsgroups: comp.lang.c
Subject: Rules in placement of 'case'-labels
Message-ID: <808@tuura.UUCP>
Date: 16 Oct 90 12:34:57 GMT
Distribution: comp
Organization: Nokia Data Systems Oy
Lines: 39

Hi!

I've found that the following construct compiles without errors at least
in Microsoft C version 6.0 (sorry, the scandinavian keyboard inhibits some
crucial characters in favor to special alphabets) :

DoThis( ... )
(
   switch( ... )
   (
   case 1:
      for( ... )
      (
         DoSomething1();
         /* Note, the 'case' label below is inside an open statement block */
   case 2:
         DoSomething2();
      )
      break;
   ...
   )
)

Weird, isn't it?  It also made me wonder whether it is legal in C .  I can
think of a few practical uses for it in Windows programming, where code size
is a concern.

However, if this is a legal construct, it introduces an inconsistency:  You
can replace the 'for' by 'if', 'while', 'do' or just a simple statement block
without any flow-control keyword.  But you cannot substitute another 'switch'
in similar manner, because the label will then belong to the inner of the two
switches.

Terveisin: Risto Lankinen
-- 
Risto Lankinen / product specialist ***************************************
Nokia Data Systems, Technology Dept *  2                              2   *
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