Re: Quick question (and I think it's come up before)

[Scott Klement <rpg400-l@xxxxxxxxxxxxxxxx>]

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Scott Klement  http://www.scottklement.com

On Fri, 17 Mar 2006, Simon Coulter wrote:
> Although both programs and procedures allow optional parameters only
> procedures allow omissable ones.

Actually, you can use omissible parameters when calling a program as well. 
For example:

     D TESTPGM         PR                  extpgm('TESTPGM')
     D   Parm1                        1A   options(*omit)
      /free
          TESTPGM(*OMIT);
          *inlr = *on;
      /end-free

Try it yourself.  Here's the code for a trivial program that receives an 
omissible parameter:

     D TESTPGM         PR                  extpgm('TESTPGM')
     D   Parm1                        1A   options(*omit)
     D TESTPGM         PI
     D   Parm1                        1A   options(*omit)
      /free

            if %addr(Parm1) = *NULL;
               dsply ('Parm 1 was omitted');
            else;
               dsply ('Parm 1 = ' + Parm1);
            endif;

            *inlr = *on;

      /end-free