Re: variable length strings
From: Steve Lionel (Steve.Lionel_at_REMOVEintelME.com)
Date: 08/19/04
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Date: Thu, 19 Aug 2004 13:16:43 -0400
On 19 Aug 2004 09:50:02 -0700, aburry@ieee.org (Mr. Adam Burry) wrote:
>aburry@ieee.org (Mr. Adam Burry) wrote in message news:<f3e1fd4d.0408181158.51dd9a67@posting.google.com>...
>The problem seems to have been: "!DEC$ ATTRIBUTES REFERENCE ::
>strFilename"
>I expected this to be redundant given the earlier REFERENCE directive,
>but apparently it actually does something. Presumably removing the
>hidden length argument?
Yes, that's what it does. This combination specifies that the caller passes
only the address of the character argument, not the length. There is a full
chapter on mixed-language programming in the Visual Fortran Programmer's Guide
which discusses this and related issues.
> CHARACTER*60 fname
> INTEGER strLen
>
> fname = strFilename
> strLen = LEN( fname )
>
>In this case, strLen will be 60 even if LEN( strFilename ) is only 10.
>How does one get the actual length of fname?
You want LEN_TRIM(fname), I assume. (It is not clear what you mean by "actual
length", but I'll assume you mean (with trailing blanks removed).
Steve Lionel
Software Products Division
Intel Corporation
Nashua, NH
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