TITLE: for loop scope preprocessor hack 

(Newsgroups: comp.lang.c++.moderated, 25 Aug 97)

[ The draft standard was recently changed such that the
  variable i in the following code snippet is undefined
  after the for loop

	for (int i = 0; i< myMax; i++)
	{
		...
	}

	int j = i; // illegal, i undefined

  Not all compilers have caught up to this specification.
  VC++ 5.0 and likely other compilers allow the assignment
  to j.  -adc ]
	

CANTRELL: Wood Cantrell <cantrell@eaze.net>

> A particular question: Is there a way (compiler flag or pragma) to
> make VC++ 5.0 respect the scoping of a variable declared in a 'for'
> statement?


JONKER: "Todd V. Jonker" <todd@clarit.com>

#define for     if (0) {} else for

(I can't take credit for this ingenious hack. I first saw it in
James Clark's code for the SP SGML parsing system.)