Well folks,
You have shown me a number of ways to skin the cat...on offense to the cat of
course.
It's programming and you can solve the problem in a number of ways, all of
which here are interesting and I have to tell you that I've learned something
today.
>>> Chip Davis <[EMAIL PROTECTED]> 7/7/2008 4:26 PM >>>
I'm afraid we're gonna have to cite you for a flagrant violation of DeMorgan's
Law, Howard. ;-)
In fairness, your problem is not caused by unfamiliarity with formal logic, but
mere lack of clarity. If I might suggest an alternative so far overlooked:
If \(Left(answer,1) = 'Y' | answer = 'YES') Then Do
Say answer
Say "The wrong response has been entered"
<etc>
This is logically equivalent and has the advantage of placing the comparisons
in
positive terms. Also, "Left(foo,1)" is equivalent to "Substr(foo,1,1)" and
somewhat clearer as well.
However, you are still stuck with the counter-intuitive "IF NOT" condition.
So what's wrong with phrasing your question in the positive and taking the
other
leg of the If-Then-Else?
If Left(answer,1) = 'Y' | answer = 'YES'
Then Nop
Else Do
Say answer
Say "The wrong response has been entered"
<etc>
Does that not make the intent of the code much clearer?
-Chip-
On 7/7/08 16:23 Howard Rifkind said:
> This is confusing me.
>
> The response to the variable 'answer' is a Y.
>
> Yet this portion of the code isn't working. Shouldn't the logic just
> fall thru because the response was a Y.
>
> IF SUBSTR(ANSWER,1,1) /= 'Y' | ANSWER /= 'YES' THEN
> DO
> SAY ANSWER
> SAY 'THE WRONG RESPONSE HAS BEEN ENTERED'
> SAY
> SAY 'PROCEDURE IS TERMINATING, PLEASE TRY AGAIN'
> EXIT
> END
>
> Thanks
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