def wc(file_path)
  lines = 0
  words = 0
  bytes = 0

  File.open(file_path) do |file|
    file.each_line do |line|
      lines += 1
      words += line.split.size
      bytes += line.bytesize
    end
  end

  [lines, words, bytes]
end

file_path = ARGV[0]
if file_path.nil?
  puts 'ファイルパスがありません。'
  exit
end

lines, words, bytes = wc(file_path)
puts "行数：#{lines}\n単語数：#{words}\nバイト数：#{bytes}\nファイルパス：#{file_path}"