#!/usr/bin/perl 
use warnings;
use strict;

my $file = "outtest.txt";
open OUT, ">>", $file || die("Cannot open file for output.\n");

my @array;
while(<DATA>) {
    s/tcp//g;
    @array = split(/\s+/, $_);
    print OUT "Address1=",$array[1],"\n";
    print OUT "Address2=",$array[2],"\n";
    print OUT "Address3=",$array[3],"\n";
}
__DATA__
tcp 20 tcp 40 tcp 80

##</code><code>##

<code>
C:\Code>perl outtest.pl
C:\Code>perl outtest.pl
C:\Code>type outtest.txt
Address1=20
Address2=40
Address3=80
Address1=20
Address2=40
Address3=80