If you'd actually run this code, you would have seen:

Useless use of private variable in void context at <scriptname> line 1
+5.

[download]

Perl is telling you what's wrong and where the problem is. Perhaps you could at least make some minimal effort before posting here. There's only 5 characters on line 15 - hardly a major debugging task.

If you didn't understand the message, then that should have been your question. And, if that is the case, add use diagnostics; to the top of your code to get more verbose messages.

Please read: How do I post a question effectively?

-- Ken

In reply to Re: Adding Numbers by kcott
in thread Adding Numbers by NastyPenguin

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