Re: Checking for missing parameters in CL

"MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx> wrote on 01/31/2018
11:38:56 AM:

So I tried something similar in CL...

pgm (&parm1)
dcl &parm1 *char (10)
dcl &p1addr *ptr
chgvar &p1addr (%address(&parm1))
if (&p1addr = *null) then(do)
/* do something if parameter wasn't specified */
enddo
else do
/* do something else if the parameter was specified */
endpgm

So far it seems to work as I expect.

We have always done it as follows. But, the above makes sense,
too. Thanks for the info.

PGM PARM(&OPTRUN)

DCLPRCOPT TEXT('IM LIFO Inventory Extensions') +
DFTACTGRP(*NO) ACTGRP(WINWISE) +
BNDSRVPGM((SRVWS01) (UTSECURSV))

/* optional parameters */
DCL VAR(&OPTRUN) TYPE(*CHAR) LEN(10)

/* parameter variables */
DCL VAR(&RUNOPT) TYPE(*CHAR) LEN(10) VALUE('*PRELIM')

/* receive optional parameters */
CHGVAR VAR(&RUNOPT) VALUE(&OPTRUN) /* run option? */
MONMSG MSGID(MCH3601) EXEC(DO) /* parm not passed */
RCVMSG MSGTYPE(*LAST) RMV(*YES) /* remove escape +
message from job log */
ENDDO


Sincerely,

Dave Clark