#!/usr/bin/ruby -w
# 定義類
class Box
# constructor method
def initialize(w,h)
@width, @height = w, h
end
# 實(shí)例方法
def getArea
@width * @height
end
end
# 創(chuàng)建對(duì)象
box = Box.new(10, 20)
# 調(diào)用實(shí)例方法
a = box.getArea()
puts "Area of the box is : #{a}"