Here is the result ( and then both running versions);

Output;

[root@testrhel AFAStest]# perl test2.pl #Right now $hash



[root@testrhel AFAStest]# vi test2.pl #I change $hash to @hash
[root@testrhel AFAStest]# perl test2.pl # Running as @hash
Scalar value @hash{'AirIATA'} better written as $hash{'AirIATA'} at te
+st2.pl line 12.
P
C
[download]

pl files

test1.pl

#!/usr/bin/perl
use warnings;
use strict;
use XML::Simple;

my $programNAME= 'This line is required to work.';


sub get_IATA
{
        my $file = shift;
        my $airline = shift;
        my @data;
        my $count=0;

        open(my $fh, '<', $file) or die "Can't read file '$file' [$!]\
+n";

        while (my $line = <$fh>)
        {
                my @fields = split(/;/, $line);
                push @data, @fields;
        }
        foreach my $data ( @data)
        {
                if ($data eq $airline)
                {
                        return $data[$count-1],"\n";
                }
                $count++;
        }
}
[download]

test2.pl

#!/usr/bin/perl
use warnings;
use strict;
use XML::Simple;

require 'test1.pl';

my $airlineLoc = "definitions/airline.csv";
my %hash;


@hash{'AirIATA'}=get_IATA($airlineLoc,'PGT');

my $letter1 = substr($hash{'AirIATA'},0,1);
my $letter2 = substr($hash{'AirIATA'},1,2);

print $letter1,"\n",$letter2,"\n";
[download]

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