# !/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 HelloWorld
    
    def reading_charge
    end

    def HelloWorld.greet
        puts "Hello www.twle.cn"
    end
end

HelloWorld.greet