Question

我一直在测试这段代码，但它没有按照我的预期运行。有人可以对此有所了解吗？

language = { JS: "Websites", Python: "Science", Ruby: "Web apps" }

puts "What language would you like to know? "
choice = gets.chomp
case choice
when "js" || "JS"
  puts "Websites!"
when "Python" || "python"
  puts "Science!"
when "Ruby" || "ruby"
  puts "Web apps!"
else
  puts "I don't know!"
end

，当我输入它的第一个条目时，但是如果我使用后一个条目它会打印＆＃34;我不知道！＆＃34;

即：如果我输入＆＃39; js＆＃39;跑，但如果我进入JS＆＃39;它抛出了我不知道的事情！＆＃39;

Answer 1

请在提问之前进行搜索，您可以在其他问题中轻松获得答案

choice = gets.chomp
case choice
when 'js', 'JS'
  puts 'Websites!'
when 'Python', 'python'
  puts 'Science!'
when 'Ruby', 'ruby'
  puts 'Web apps!'
else
  puts "I don't know!"
end

建议之后

choice = gets.chomp
puts  case choice
      when 'js', 'JS'
         'Websites!'
      when 'Python', 'python'
         'Science!'
      when 'Ruby', 'ruby'
         'Web apps!'
      else
         "I don't know!"
      end

多个case / when条件时带||

1 个答案: