The nodes above do a great job finding the errors. Just a very tiny thing to point out in this line 
open (VECTORS, "vectors") or die print "Cannot open 'vectors' file: $!
+ \n";

[download]
The print statement after die is not really needed since this what dies does anyway.
Just a little something to save you a few keystrokes

In reply to Re: Newbie Errors by Desdinova
in thread Newbie Errors - Uninitialized Values by Anonymous Monk

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