Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!ames!elroy!spl1!laidbak!daveb
From: daveb@laidbak.UUCP (Dave Burton)
Newsgroups: comp.lang.c
Subject: Re: QuickC
Message-ID: <1628@laidbak.UUCP>
Date: 29 Aug 88 13:53:08 GMT
References: <8808261424.AA11504@ucbvax.Berkeley.EDU>
Reply-To: daveb@laidbak.UUCP (Dave Burton)
Organization: is pretty bad/My method of
Lines: 26

In article <8808261424.AA11504@ucbvax.Berkeley.EDU> TURGUT@TREARN.BITNET (Turgut Kalfaoglu) writes:
|[in QuickC]
|square(num) int num; { num = num*num; }
|
|...I get '4' as an answer...[then I tried]
|
|square(num)
|int num;
|{
|  int dummy;
|  num = num*num;
|  dummy=222;
|}
|
|but the call STILL works... Can anyone shed some light onto this?
|WHY does it work?

The result of the _calculation_ was placed into the register used to
return the value to the caller (ax?). The addition of the _assignment_
did not have to disturb this register. Try using "dummy=222*num;" instead.
This will force another calculation, and should overwrite the `correct'
result.
-- 
Dave Burton		| ``/* You are not expected to understand this. */''
{spl1,sun}!laidbak!daveb|
(312) 505-9100 x325	| Disclaimer: I channel only for myself.