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  1. or download this
    use strict;
use warnings;
...

my @a = (10, 20, 30, 40, 50, 60, 70);
print "F: ", scalar @a, "\n";                               # = 7, the
+ length of @a
  2. or download this
    Useless use of a constant (10) in void context at D:\stuart\play\temp\
+pp.pl line 4.
Useless use of a constant (20) in void context at D:\stuart\play\temp\
+pp.pl line 4.
...
D: 70
E: 70
F: 7