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From: gwyn@brl-tgr.ARPA (Doug Gwyn <gwyn>)
Newsgroups: net.lang.f77
Subject: Re: calling _printf() from f77
Message-ID: <5474@brl-tgr.ARPA>
Date: Fri, 26-Oct-84 19:10:31 EST
Article-I.D.: brl-tgr.5474
Posted: Fri Oct 26 19:10:31 1984
Date-Received: Sun, 28-Oct-84 05:59:10 EST
References: <146@uwai.UUCP>
Distribution: net
Organization: Ballistic Research Lab
Lines: 12

> Does anyone out there know how to call _printf() from f77 and the hazards
> involved with this?

As has been pointed out recently, mixing Fortran and C I/O is hazardous.
The file descriptors that the Fortran run-time support has squirreled
away are not directly accessible from Fortran, and there is no promise
(for example) that LUN 6 is associated with UNIX file descriptor 1
(although it usually will be if you haven't been doing anything fancy).

For something as simple as printf(), you can probably get away with it.
You will need to write a small interface that is callable from Fortran
and that passes its parameters on to printf().  Watch out for buffering!