Re: REXX from command line (was text equation)

Okay... I have this REXX calculator right now I can use with
STRREXPRC parm('1+2*3')

What I would *like* to do is be able to say
eval '1+2*3'
and have the answer come up as a program message
sndpgmmsg is what I would use in CL.

Thinking about all the pieces that need to fit together...

I think I would need to be able to return a parameter
from REXX to pass to a CL that would do the SNDBRKMSG.
then I would create a CMD for the CL wrapper for the
REXX program.

Okay, is there a URL for an online book I can go to for
the REXX interpreter for the AS/400?

Regards,

Jim Langston

bmorris@ca.ibm.com wrote:

> >Date: Tue, 21 Dec 1999 07:37:33 -0800
> >From: Jim Langston <jlangston@conexfreight.com>
> > ...
> >Now I only have one question.  How do I run a REXX procedure
> >from the command line?
> > ...
>
> Jim, you can use STRREXPRC, or you can add a CMD interface.
> If you use a CMD, say *REXX as the CPP and then you give the
> source file and member with the REXX proc, and instead of
> getting the argument directly, you get it in the form
> PARMNAME('parmvalue').
>
> For example, if you have this PARM in your command:
>    PARM       KWD(EXPR) TYPE(*char) len(500)
> You would code this in your REXX to get the parameter into
> in variable expr:
>    parse arg "EXPR('"expr"')"
> instead of just
>    parse arg expr
>
> Here's a cool little rexx calcalator:
> /* */
>  say "Enter expressions.  Enter a blank line to exit."
>  do forever
>    parse pull expr
>    if (expr = '') then leave
>    interpret expr
>  end
>  return
>
> Here's a session using it (lines marked > are input lines):
>
>     Enter expressions.  Enter a blank line to exit.
>   > i=3
>   > j=4
>   > say i+j
>     7
>   > i='abc'
>   > say substr(i,1,2)
>     ab
>   > do i = 1 to 3; say i; end;
>     1
>     2
>     3
>   >
>     Press ENTER to end terminal session.
>
> Barbara Morris (woman of the zeros)
>
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