Path: utzoo!attcan!uunet!munnari.oz.au!goanna!ok
From: ok@goanna.cs.rmit.oz.au (Richard A. O'Keefe)
Newsgroups: comp.lang.c
Subject: Re: Seven Original Sins of K&R (Long)
Message-ID: <3846@goanna.cs.rmit.oz.au>
Date: 28 Sep 90 04:14:12 GMT
References: <12780@sdcc6.ucsd.edu> <4700066@m.cs.uiuc.edu>
Organization: Comp Sci, RMIT, Melbourne, Australia
Lines: 30

In article <4700066@m.cs.uiuc.edu>, gillies@m.cs.uiuc.edu writes:
> Hey, how else can I write the following amazingly convoluted code
> (idea courtest of Harbison & Steele's book, first edition):

> main()
> {
> int x,i;
> x=1;
> switch(x) {
> 	case 1:
> 		for (i=0; i < 10; i++)
> 	case 2:
> 		printf("%d ",i);
> }
> }

Easily:
    main()
	{
	    int i;
	    for (i = 0; i < 10; i++) printf("%d ", i);
	    exit(0);	/* you shouldn't leave this out */
	}

This was possible because of the assignment x=1.  If that assignment
had been x=2, the effect would have been undefined because i was not
initialised.  That's a good reason not to jump into loops even if C lets you.

-- 
Fixed in the next release.