拆分源代码

1# +letter+ 应为 +nil+ 或给定 +word+ 的一部分，并转换为小写
2def word_info word, letter
3
4  n = word.length
5  underscores = "_ " * n
6
7  unless letter.nil?
8    i = word.index(letter)
9    underscores[2 * i] = letter.upcase
10  end
11
12  underscores
13  
14end

1require_relative "word_info" 
2
3hidden_word = "fuchsia" 
4
5letter = nil
6
7loop do
8
9  info = word_info(hidden_word, letter)
10
11  puts info
12  puts
13
14  print "请输入一个字母: "
15
16  answer = gets
17  answer = answer.chomp.downcase
18
19  if answer == 'stop'
20    exit
21  end
22
23  if answer.length > 1
24    puts "你只能输入一个字母！"
25  elsif answer.empty?
26    puts "输入不能为空"
27  elsif hidden_word.include?(answer)
28    puts "该字母在隐藏单词中"
29    letter = answer
30  else
31    puts "无效的字母"
32  end
33
34end