# !/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()
      puts "Box count is : #@@count"
   end
end
 
# 创建两个对象
box1 = Box.new(6, 8)
box2 = Box.new(20, 40)
 
# 调用类方法来输出盒子计数
Box.printCount()