# !/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.

i = 1

while i < 5 do
   puts("在 while 循环语句中 i = #{i}" )
   i +=1
end