Can you show us what you have so far?

If you don't have anything yet, you might consider building a loop that reads from STDIN, and then checks the string for non-numeric characters with a regular expression. Don't forget to chomp! Once the string is in the format you want, leave the loop and process it however you want.

In reply to Re: force user to only enter numbers by AR
in thread force user to only enter numbers by Anonymous Monk

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