Yes ... silly me: I wasn't thinking :-[ Thanks for noticing.
do while \datatype(year,'N') | LENGTH(year) \= 4
SAY 'Invalid Date!!... enter year, using only 4 num digits'
pull year
end
Cheers, Chris Poncelet
Hunkeler Peter (KIUK 3) wrote:
If you want to check that the user has entered a 4-digit year,
you could code:
do while \datatype(year,'N') & LENGTH(year) \= 4
SAY 'Invalid Date!!... enter year, using only 4 num digits'
pull year
end
You could but it would not work as intended. You need to use
the OR operator not the AND.
--
Peter Hunkeler
CREDIT SUISSE
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