printing contents of an array

i'm trying to print the contents of an array but i keep getting errors:
here is my code:
use strict;
use warnings;
      next unless /^ATOM/;
      my @flds = split;
      push @x, $flds[6];
      push @y, $flds[7];
      push @z,$flds[8];
for($i = 0; $i< @x;++$i)
      print $x[$i]"\n";

the error i'm getting is:
Global syhsmbol "$i" requires explcit package name
what do i need to do to solve this?
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you need to localise the variable:

    for(my $i=0 ...

However, a more perlish way to write that would be

    foreach my $element(@x) {
        print $element, "\n";

although I would shorten that to:

    print $_,$/ foreach @x;

or this is even cooler:

        local $, = "\n";
        print @x;

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