Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watmath!clyde!rutgers!seismo!mcvax!cernvax!jmg
From: jmg@cernvax.UUCP
Newsgroups: comp.sys.atari.st
Subject: Re: sizeof("string")
Message-ID: <468@cernvax.UUCP>
Date: Wed, 15-Apr-87 02:34:44 EST
Article-I.D.: cernvax.468
Posted: Wed Apr 15 02:34:44 1987
Date-Received: Fri, 17-Apr-87 06:15:41 EST
References: <8704120143.AA11235@cory.Berkeley.EDU> <2006@ihuxz.ATT.COM>
Reply-To: jmg@cernvax.UUCP ()
Organization: CERN European Laboratory for Particle Physics, CH-1211 Geneva, Switzerland
Lines: 45

In article <2006@ihuxz.ATT.COM> burris@ihuxz.ATT.COM (Burris) writes:
>
>The first response was correct. That's why there's a strlen() function.
>Now if it were as follows:
>
>char	string[ 20 ];
>char	*strpt = "hello";
>
>main()
>{
>	printf( "%d\n", sizeof( string ) );
>	printf( "%d\n", sizeof( strpt ) );
>	printf( "%d\n", sizeof( "hello" ) );
>}
>
>the result would be:
>
>20
>4
>4

As the originator of all of this C(ontroversy) I thought that I ought
to see what happens on our BSD4.2 system. The output of the test program:


20
4
6

The moral is clear: either say what the test program DID produce (on
system xyz with compiler pqr) or risk dropping a clanger.

Moshe did suggest to me a trick which made sizeof work. I forget what
it was.

Two further precisions on Megamax:

1. It is %* which is not accepted in printf statements.

2. Megamax does not like #define statements stuck just anywhere.
   It appears that they must be at the start of the text (I am not
   sure of the exact restrictions, but a perfectly valid gnuplot #define
   of a symbol is rejected.

Also, no getenv for megamax!