Sorry, I meant to say "That's why the looping is needed if you use a hash."

Of course, you could just do

sub get_score {
   my ($score) = @_;
   return 'A' if $score >= 90;
   return 'B' if $score >= 80;
   return 'C' if $score >= 70;
   return 'D' if $score >= 60;
   return 'F';
}
[download]

How do I represent the values and keys in a loop or conditional statement?

You gets the keys and values of a hash using keys and values.
There is various documentation throughout the internet: keys and values.

I'm not sure if map counts as a loop, but if it does, then this has hash values in a loop and a conditional (or two):

sub get_grade
{
  my $score = shift;
  my $grade = 'Ungraded';
  $score = 0 unless $score =~ /^\d+$/;
  map { $grade = $grade_scores{$_} if $score > $_ } sort keys %grade_s
+cores;
  $grade;
}
[download]

-=( Graq )=-