use strict;
use warnings;

print "A: ", scalar(10, 20, 30, 40, 50, 60, 70), "\n";      # = scalar(70) = scalar 70 = 70

print "B: ", scalar(70), "\n";                              #              = scalar 70 = 70

print "C: ", scalar 70, "\n";                               #                          = 70

my $x = scalar(10, 20, 30, 40, 50, 60, 70);                 # = scalar(70) = scalar 70 = 70
print "D: ", $x, "\n";

$x = (10, 20, 30, 40, 50, 60, 70);                          #       = (70)             = 70
print "E: ", $x, "\n";

my @a = (10, 20, 30, 40, 50, 60, 70);
print "F: ", scalar @a, "\n";                               # = 7, the length of @a

##</code><code>##

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.
Useless use of a constant (30) in void context at D:\stuart\play\temp\pp.pl line 4.
Useless use of a constant (40) in void context at D:\stuart\play\temp\pp.pl line 4.
Useless use of a constant (50) in void context at D:\stuart\play\temp\pp.pl line 4.
Useless use of a constant (60) in void context at D:\stuart\play\temp\pp.pl line 4.

Useless use of a constant (10) in void context at D:\stuart\play\temp\pp.pl line 10.
Useless use of a constant (20) in void context at D:\stuart\play\temp\pp.pl line 10.
Useless use of a constant (30) in void context at D:\stuart\play\temp\pp.pl line 10.
Useless use of a constant (40) in void context at D:\stuart\play\temp\pp.pl line 10.
Useless use of a constant (50) in void context at D:\stuart\play\temp\pp.pl line 10.
Useless use of a constant (60) in void context at D:\stuart\play\temp\pp.pl line 10.

Useless use of a constant (10) in void context at D:\stuart\play\temp\pp.pl line 13.
Useless use of a constant (20) in void context at D:\stuart\play\temp\pp.pl line 13.
Useless use of a constant (30) in void context at D:\stuart\play\temp\pp.pl line 13.
Useless use of a constant (40) in void context at D:\stuart\play\temp\pp.pl line 13.
Useless use of a constant (50) in void context at D:\stuart\play\temp\pp.pl line 13.
Useless use of a constant (60) in void context at D:\stuart\play\temp\pp.pl line 13.

A: 70
B: 70
C: 70
D: 70
E: 70
F: 7