Comments (1)
And here's the solution code:
# note we have added a rounding operation on the height to ensure
# the output is sensible in terms of decimal places
class OrangeTree
def initialize
@height = 0
@orange_count = 0
@alive = true
end
def height
if @alive
@height.round(1)
else
'A dead tree is not very tall. :('
end
end
def count_the_oranges
if @alive
@orange_count
else
'A dead tree has no oranges. :('
end
end
def one_year_passes
if @alive
@height = @height + 0.4
@orange_count = 0 # old oranges fall off
if @height > 10 && rand(2) > 0
# tree dies
@alive = false
'Oh, no! The tree is too old, and has died. :('
elsif @height > 2
# new oranges grow
@orange_count = (@height * 15 - 25).to_i
"This year your tree grew to #{@height.round(1)}m tall," +
" and produced #{@orange_count} oranges."
else
"This year your tree grew to #{@height.round(1)}m tall," +
" but is still too young to bear fruit."
end
else
'A year later, the tree is still dead. :('
end
end
def pick_an_orange
if @alive
if @orange_count > 0
@orange_count = @orange_count - 1
'You pick a juicy, delicious orange!'
else
'You search every branch, but find no oranges.'
end
else
'A dead tree has nothing to pick. :('
end
end
end
from learn_to_program.
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from learn_to_program.