How to post embeded code

This is how the code looks when using the method descriped on http://www.blogkori.com/how-to-show-htmljava-codes-in-bloggerblogspot-blog-posts

sub get_oid_value {
  our ( $oid, $result, $status, $returnstring );

  $oid = shift(@_);

  if ( !defined( $s->get_request($oid) ) ) {
    if ( !defined( $s->get_request($oid_sysDescr) ) ) {
      print "SNMP agent not responding\n";
      exit 3;
    }
    else {

      #print "SNMP OID does not exist\n";
      return "";
    }
  }
}

Will investigate further the method descriped on http://blog.philenotfound.com/2011/02/how-to-display-code-in-blogger-blog.html