String passing (was :Re: Problem calling a C function from Fortran

[rbt]

In article <20518 at tut.cis.ohio-state.edu> rajiv at tuna.cis.ohio-state.edu (Rajiv Agrawal) writes:
>While on the subject of C and FORTRAN on VMS ... How does one pass
>strings between the two compilers???  We have VAX FORTRAN and GnuC
>compilers.  I just cannot pass any strings between a C routine and a
>FORTRAN routine.



The problem is that FORTRAN programs use the CLASS_S descriptor mechanism while
C modules have zero terminated strings by default.

The best way to solve your problem is described in chapter "Using VAX C Features
on VMS" of "Guide to VAX C" manual. It describes how function parameters must
be declared to be conformant to the CLASS_S descriptor class.

The only problem in doing this is that ALL the modules calling the C routine  
MUST have their parameters defined as CLASS_C descriptor, otherwise...

	Roberto Divia`
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