Ok, just ran the program over here with out any modifications and it works for me....
I made a few small ajustments to make it little bit simpler to see whats going on and I used strict and warnings (should always do that).
Just for your info I am using:
perl v5.8.0 built for i386-linux-thread-multi
#!/usr/local/bin/perl -w
use strict;
open(IN, '<', "test_file.txt");
my %fvalues;
while(<IN>){
if (/(.*) (.*)/){
$fvalues{$2} = $1;
print " While : $fvalues{$2}\n"; # this one prints
}
}
for(my $counter = 1 ; $counter < 6 ; $counter++){
print " For : $fvalues{$counter}\n" ; # no output
}
close(IN);
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