FORTRAN inside C -- I/O init for UNIX

[George A. Planansky]

I want to put a C wrapper around Fortran utilities, to make command line
parsing and so on easy.  The Sun FORTRAN programmer's guide, section 11.3
(The C-FORTRAN Interface), page 186 (revision A 6 May 1988), says, with
regard to execution that starts with the C main and so does not do the
FORTRAN I/O library initializations for a FORTRAN subroutine that it
calls:

	The C program should initialize I/O by inserting the
	following line at the start of the program:

		call f_init()

	This establishes the preconnection of units 0, 5, 6.

This does not look like C code to me, or, to cc -- I nonetheless did put
the line in some plausible places, but it didn't take.  

1. where and how do f_init() and f_exit() really go?

2. how do I tell cc, or f77, where to find/ resolve these objects?

3. in general, in Unix (Sun OS and 4.3BSD), how do you compile FORTRAN
subroutines, to run under a C main(argc, argv) ?  The Sun manual says:

	cc main.c fsub.f -lF77 -lI77 -lU77 -lc -lm

Are these libraries and that invocation standard in 4.3?  I would like to
run the same stuff on our Suns (3/60's, 3/280, OS 4.01) and our Alliant
fx40 (4.3 BSD essentially).  

Alliant's FORTRAN manual tells me that, to get the I/O stuff, I need to
put a FORTRAN wrapper around my C-wrapper, that is:

	program fmain
	call cmain
	end

	for:

	#include <stdio.h>
	cmain()
	{
	...
	fsub_()
	}

	with:
	subroutine fsub()
	...
	end

But this defeats my intention, of using C's command line arguments.  How
else can I get the necessary I/O or init stuff?

Please send your enlightening replies to me, and I will summarize if there
is interest.

email to : gplan at ra.umb.edu

George Planansky
Atmosphere Environment Research
Cambridge MA
(617) 547-6207