marine subroutine

[Amichai Teumim]

Hi

I'm trying to understand subroutines.

#!/usr/bin/perl

&marine()

sub marine {
  $n += 1; #Global variable $n
  print "Hello, sailor number $n!\n";
}


This doesn't work. Is &marine() incorrect? How would I call the sub marine?

Thanks

Amichai