#!/usr/bin/perl

print "Perl version is: $]\n";

use strict;
use warnings;

if ( 1 )
{
    warn "there can only be one, and it's in the IF clause\n"
}
else:   # beware that colon!!!! that's Python, not Perl!!!
{
    warn "there can only be one, and it's in the ELSE clause\n"
}

##</code><code>##

Perl version is: 5.026001
there can only be one, and it's in the IF clause
there can only be one, and it's in the ELSE clause

Perl version is: 5.032000
there can only be one, and it's in the IF clause
there can only be one, and it's in the ELSE clause

Perl version is: 5.033001
there can only be one, and it's in the IF clause
there can only be one, and it's in the ELSE clause