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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!ihnp4!gargoyle!paul
From: paul@gargoyle.UChicago.UUCP (Paul Schinder)
Newsgroups: net.lang.f77
Subject: Re: binary i/o problem
Message-ID: <455@gargoyle.UChicago.UUCP>
Date: Sat, 11-May-85 02:16:18 EDT
Article-I.D.: gargoyle.455
Posted: Sat May 11 02:16:18 1985
Date-Received: Sun, 12-May-85 04:56:16 EDT
References: <136@lamont.UUCP> <>
Reply-To: paul@gargoyle.UUCP ( Schinder)
Organization: U. Chicago - Computer Science
Lines: 28
Summary: 

In article <> therneau@ur-msbvax.UUCP writes:
>
>  You forgot to rewind the file (I think).  The BSD fortran always opens
>files at the end - assuming that you want to append to them.  Hence the
>immediate end-of-file
>
>
>		Terry Therneau
>		Statistics Dept.  U of Rochester


That's true in 4.1 BSD, but not 4.2, where f77 opens files at the
beginning.  I *think* the problem in the original posting is caused
by the fact that the open statement doesn't include a "file = ...".
When there is no filename, the filename defaults
to "fort.unitnumber", which explains the error message (fort.5 does
not exist, hence is empty, so the first read gets EOF).  I almost
replied saying to  "open(5, file='/dev/tty',form='unformatted',...)",
but I don't think this will work if you use a pipe to enter the data.
I think in all cases /dev/tty is connected to the
terminal.  Does anyone have any other ideas?
-- 


				Paul Schinder
				Astronomy and Astrophysics Center
				University of Chicago
				uucp: ..!ihnp4!oddjob!paul