#!/usr/bin/perl -w

use strict;
use warnings;

my $dir = 'C:\Users\ZB\Desktop\Text Files';
opendir (DIR, $dir) or die $!;

while (my $file = readdir(DIR))
{
    next if $file eq '.';
    next if $file eq '..';
    &countWords($dir, $file);    #call sub
}

sub countWords
{
    my $line = @_;        #receive file as input
    my @array = split(/ /, $line);
    print "$#array\n";
}

closedir(DIR);