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From: ark@alice.UucP (Andrew Koenig)
Newsgroups: net.lang.c
Subject: Re: op= construction
Message-ID: <5614@alice.uUCp>
Date: Mon, 9-Jun-86 22:41:26 EDT
Article-I.D.: alice.5614
Posted: Mon Jun  9 22:41:26 1986
Date-Received: Thu, 12-Jun-86 01:29:15 EDT
References: <108@mruxe.UUCP>
Organization: Bell Labs, Murray Hill
Lines: 24

>	Quick question-

>	In a loop, an array element is incremented, then the array index
>	is advanced to the next element. I recently coded this with
	
>	....
>	total[i++] += f;
>	....
	
>	After a couple of "Memory fault- core dumped" messages, I realized
>	that i is getting incremented twice. I broke it into two lines and
>	everything was ok, but I'm wondering why this construction doesn't
>	work.

Easy -- your compiler is broken.

	total[i++] += f;

should be equivalent to

	total[i] += f;
	i++;

If it isn't, your compiler is busted.  Simple as that.