http://tibasicdev.wikidot.com/forum/t-858250/input-validation-ti89 Posts in the discussion thread "input validation ti89" - test for numeric or non-numeric input Sat, 18 Apr 2026 01:30:14 +0000 http://tibasicdev.wikidot.com/forum/t-858250#post-2026510 http://tibasicdev.wikidot.com/forum/t-858250/input-validation-ti89#post-2026510 Tue, 06 May 2014 09:51:01 +0000 tgahan 1884111 Hi
In a TI 89 basic program
I want to check if user input is numeric or non-numeric.
If non-numeric then repeat and ask again for numeric input or cancel input.
Anyone able to help me?
Thanks

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