Re: Calling RPG program from C

Jevgeni:

The IBM _WebSphere Development Studio ILE C C++ Programmers Guide_ (SC09-2712) contains a whole chapter (Chapter 25. Working with Multi-Language Applications) that covers these topics in detail, with many examples,.etc., and see also "Chapter 26: Using Packed Decimal Data in a C program".

If you are still having problems, post the C prototype for the program you are trying to call, and also the lines of C code where you are attempting to invoke it, so others can try to offer specific suggestions.

I hope that helps,

Mark S. Waterbury

> On 3/7/2011 8:44 AM, Jevgeni Astanovski wrote:

Hi all,
Too bad not being familiar also with RPG...

I'm trying to call an RPG program from my ILE/C program.
RPG program parameters are described in the manual, there are plenty of parameters, that are described like this:
@ETK A(4)
@ETN S(7,0)
I understand, that @ETK is char(4). @ETN seems to be SIGNED(7,0) so from the C point of view effectively also char(7).
When I call the program filling @ETN with 7 zeroes (the parameter is marked as "not used" in the manual) I get a decimal error MCH1202.
I ask the manufacturer - what is the type of the parameter?
He answers: 7 0
:-(
He even sent me a source, below is a row from it:
62000 C PARM @ETN 7 0
But frankly speaking it tells me close to nothing.

Can anyone tell me, is it decimal(7,0) or char(7)?

TIA,
Jevgeni