# !/usr/bin/ruby -w

# -*- encoding:utf-8 -*-

# filename: main.rb

# author: 简单教程(www.twle.cn)

# Copyright © 2015-2065 www.twle.cn. All rights reserved.

​

​

class Box

   # 初始化类变量

   @@count = 0

   def initialize(w,h)

      # 给实例变量赋值

      @width, @height = w, h

      @@count += 1

   end

   def self.printCount()