gpc questions_(re)

Mon, 25 Aug 1997 17:47:17 +0200 (MEST)

Hello!


According to Fausto Iannuzzi:
> I have read it's possible to call gcc functions from a gpc program or unit 
> adding ";C" to functions' declaration. Is it also  possible to call or use 
> gpc functions, or generally gpc code, from a gcc program?

Yes:  To call the Pascal procedure

    Procedure foo ( Var Bar: Integer );

from a C program, use the header

    extern void Foo ( int *bar );

Note that the First Character Of The Pascal Procedure Is Capitalized.

Compile the Pascal source as a Unit or Module to avoid a `main()'
function to be generated from it.


> Does gpc support operator overloading?

Yes:

    Type
      Foo = ;


    Operator + ( x, y: Foo ) = z: Foo;

    begin (* Foo + Foo *)
      ;
    end (* Foo + Foo *);


Hope this helps,

    Peter

 Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer
peter.gerwinski@uni-essen.de - http://home.pages.de/~peter.gerwinski/ [970201]
 maintainer GNU Pascal [970714] - http://home.pages.de/~gnu-pascal/ [970125]

Peter Gerwinski (peter@agnes.dida.physik.uni-essen.de)