Okay, just a quick one before I head off to bed. First, grep's points were spot on. Second, I went ahead and recoded this the way I think you were intending it. I grab the players and stick them in an array. I grab the scores and stick them in a hash. Then, I create another hash and use a hash slice (with players as the key) to match listed players with their scores. I tested it on a couple of small data files and it seems to work fine.

#!/usr/bin/perl -w
use strict;

my $team_file = shift || 'player'; # you can specify a team file on th
+e command
                                   # line or take the default
my $scores = 'score';

# get players
open TEAM, "< $team_file" or die "Cannot open $team_file for reading: 
+$!";

# the grep ensures that we actually have data
chomp( my @players = grep /\w+/, <TEAM> );
close TEAM;

# get scores
open SCORE, "< $scores" or die "Cannot open $scores for reading: $!";
my %all_scores = map {chomp;split/,/} grep { /[^,]+,[^,]+/ } <SCORE>;
close SCORE;

# get player scores for listed players
my %player_scores;
@player_scores{ @players } = @all_scores{ @players };

while  ( my ( $player, $score ) = each %player_scores ) {
    print "Player: $player\tScore: $score\n";
}
[download]

The caveat here, though, is to understand what I did as opposed to just using it. You can learn a fair amount of stuff that would be beneficial for good programming practices.

Incidentally, you might wonder why I threw that map and grep statement in there. This is because, on the off chance this is homework, I want something that you can't explain to an instructor (no offense). If, on the other hand, you need this for a personal or work problem, then it should work just fine.

Cheers,
Ovid

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