# !/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.

score = 70
 
result = case score
when 0..40
    "糟糕的分数"
when 41..60
    "快要及格"
when 61..70
    "及格分数"
when 71..100
       "良好分数"
else
    "错误的分数"
end
 
puts result