use strict;
use warnings;

print "Network (16 bits) pack/unpack: ", unpack ('n', pack ('n', -1)), "\n";
print "Short pack/unpack: ", unpack ('s', pack ('s', -1)), "\n";
print "Network (32 bits) pack/unpack: ", unpack ('N', pack ('N', -1)), "\n";
print "Long pack/unpack: ", unpack ('l', pack ('l', -1)), "\n";
print "Network (cvt) pack/unpack: ", unpack ('s', pack ('s', unpack ('n', pack ('n', -1)))), "\n";

##</code><code>##

Network (16 bits) pack/unpack: 65535
Short pack/unpack: -1
Network (32 bits) pack/unpack: 4294967295
Long pack/unpack: -1
Network (cvt) pack/unpack: -1