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  1.  Home
  2. MI400
  3. July 2002

Re: MI as the MI language of the as400.

From: Joe Pluta <joepluta@PlutaBrothers.com>
> I'm in a mood, so I want to make a point:
> > 1) GOTO statements can be used to implement any control structure
> > we want. We have learned that this is bad and tend to avoid GOTOs
> > (structured programming). We can't handle arbitrary control structures.
>
> Not true.  Unconditional GOTO statements cannot be used to implement
control
> structures.  A conditional branch is required.  However, I'm pretty sure
> only one condition needs to be implemented.
>

>From COBOL:

GO TO AAA BBB CCC DEPENDING ON NNN

or this horror:

PERFORM PPP
ALTER PPP TO QQQ
PERFORM PPP
ALTER PPP TO SSS
PERFORM PPP
STOP RUN.

PPP.
    GO TO XXX.

XXX.
    DISPLAY "XXX".

QQQ.
    DISPLAY "QQQ".

SSS.
   DISPLAY "SSS".

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