# !/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

   # 构造器方法

   def initialize(w,h)

      @width, @height = w, h

   end

   # 定义 to_s 方法

   def to_s

      "(w:#@width,h:#@height)"  # 对象的字符串格式

   end

end