char2telephonic.rb

File.open("words.txt") { |f|
  f.each { |word|
    word = word.to_s.chomp.downcase
    p word
    word.each_char { |l| # extracting letters
      puts "\t Current letter: #{l}"
      num = case l
            when 'a'..'c' then 2
            when 'd'..'f' then 3
            when 'g'..'i' then 4
            when 'j'..'l' then 5
            when 'm'..'o' then 6
            when 'p'..'s' then 7
            when 't', 'u', 'v' then 8
            else 9
            end
      puts num
    }
  }
}