Romeo and Julie - solution
Subroutines in Perl example from a Well House Consultants training course
More on Subroutines in Perl [link]
Source code: romeo Module: P209
=head1 Romeo and Julie - solution
Romeo wants to rescue his girlfriend Julie from
her evil stepdad's home, where she has been
locked in her room ... high on the castle mound
in far, far, away.
Julie's room is 4 metres up on the first floor,
and the only stable ground below it is 3 metres
from the wall. The castle mound in 12 metres
tall and the moat makes it impractical to get
the base of the ladder nearer that 5 metres from
Romeo is going to buy two ladders from B and Q
to reach Julie. Write a program to work out
how long the ladders should be.
$h = "Romeo";
$w = "Julie";
# Oh heck - I don't know the algorithm so I'll
# hide it within a "sub" ....
$lad1 = bandq::ladlen(4,3);
# When called with a list, also returns a
# stability factor.
($lad2,$sf) = bandq::ladlen(12,5);
print "$h must buy ladders $lad1 and $lad2" .
" m to get to $w\n";
print "Stability factor is $sf\n";
# Following line waits for keyboard input on
# a windows box so that the user gets a chance
# to see the results before the flash away!
$wait = <STDIN> if ($^O =~ /^MS/);
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