my $rand_position = $positions_ref->[ rand( $#{$positions_ref} ) ];
my $rand_location = $locations_ref->[ rand( $#{$locations_ref} ) ];
You have an off-by-one error on those array subscripts. 'in the kitchen' will never be chosen from @locations and 'reclining' will never be chosen from @positions.
I would write it more like this:
#!/usr/bin/perl
use strict;
use warnings;
my @positions = qw( sitting standing reclining );
my @locations = ( 'at the museum', 'in the woods', 'on the beach', 'in
+ the kitchen' );
my @drinks = qw( scotch beer coke yoohoo );
1 while do_it( print_options( \@drinks ), \@positions, \@locations );
sub print_options {
my $drinks_ref = shift;
for my $i ( 0 .. $#$drinks_ref ) {
print $i + 1, ". $drinks_ref->[$i]\n";
}
my $selection;
do {
print 'Choose a number: ';
chomp( $selection = <STDIN> );
} until $selection >= 1 && $selection <= @$drinks_ref;
return $drinks_ref->[ $selection - 1 ];
}
sub do_it {
my ( $drink, $positions_ref, $locations_ref ) = @_;
my $rand_position = $positions_ref->[ rand @$positions_ref ];
my $rand_location = $locations_ref->[ rand @$locations_ref ];
print "You just drank a $drink $rand_location in the $rand_positio
+n position.\n";
if ( $rand_location eq 'on the beach' ) {
print "YEEEEEHAAAWWWWWWWWWW!\n";
return 0;
}
return 1;
}