#!/usr/bin/ruby -w

class Box
   # 初始化類(lèi)變量
   @@count = 0
   def initialize(w,h)
      # 給實(shí)例變量賦值
      @width, @height = w, h

      @@count += 1
   end

   def self.printCount()
      puts "Box count is : #@@count"
   end
end

# 創(chuàng)建兩個(gè)對(duì)象
box1 = Box.new(10, 20)
box2 = Box.new(30, 100)

# 調(diào)用類(lèi)方法來(lái)輸出盒子計(jì)數(shù)
Box.printCount()