# !/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.

def hello
    puts "在 hello 方法内"
    yield 17
    puts "你又回到了 hello 方法内"
    yield 33
end

hello{ |i| puts "你在语句块(block #{i}) 内" }