What does this error mean?



Use of uninitialized value in addition (+) at lib.pl line 13, <STDIN> line 1.





I've initialized my values so I'm not sure why the error...

Here is the full code (it is a library file):
#!/usr/bin/perl
use strict;
use warnings;
my $line;
sub calcsum {
   my @funcArray = @_;
     my $funcSum = 0;
     my $funcArr = 0;
   my $arrcount = scalar(@_);
   foreach my $line (@funcArray) {
     $funcSum += $line;
     } 
   return ($funcSum);
   }

[download]
Here's the main file: 
#!/usr/bin/perl
use strict;
use warnings;

require 'lib.pl';

my @userArray = <STDIN>;

my $sum = calcsum(my $funcSum);

print "Sum $sum\n";

[download]

I'm still learning so please be kind. I've tried moving the "my $line;" after the sub line and it didn't make a difference.

Thanks.

In reply to Use of uninitialized value in addition (+) by Anonymous Monk

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