Re: Flags in TI Basic

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: Flags in TI Basic
From: Ray Kremer <rkremer@BRADLEY.EDU>
Date: Sat, 18 Apr 1998 12:35:37 -0400
Reply-To: Ray Kremer <rkremer@BRADLEY.EDU>

I imagine they expected us to use variables.  You can store a number into,
say, X.  Then you can check X later to see what happened before.

Menu(1,one,O,2,two,T)
Lbl O
1->x
Goto A
Lbl T
2->x
Lbl A
If X==1
Disp "You chose One"
If X==2
Disp "You chose Two"

Seems to me this works as well as the old flag system.

>Suppose the user is asked to make a menu choice between two options, and
>suppose that later in the program, much later, it is necessary to know what
>that choice was.  Ordinarily a flag would be set at the time the choice was
>made.  This flag could later be tested to find out what that choice was.
>
>To this writer, flags are an absolutely essential item in a calculator
>programming language, and yet, I note they have not been provided in the
>TI-85/86.  Even today, Hewlet Packard still provides flags in their
>programmable calculaters.
>How did the developers of the TI-85/86 intend this situation to be handled
>without flags?

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