You may want to look at IO::Prompt. 
use IO::Prompt;

my $reply = prompt("Pick a letter between a and d.\n",
  -r => { 
    "Pick a letter between a and d -- or else!\n" => qr/^[a-d]$/i 
  }
);

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In reply to Re: while loop almost correct by Anonymous Monk
in thread while loop almost correct by irvson

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