mysub(5);

sub mysub {
  my $val = shift || 8;
    
  print "next demo: \n";
  for (1..10){
    next if $_ == $val;
    print $_, "\n";
  }
  print "\nreturn demo: \n";
  for (1..10){
    return if $_ == $val;
    print $_, "\n";
  }
}