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    It is scary that you have to ask this question. Are you absolutely sure you can't handle the values in a while loop? Commented Apr 9, 2015 at 10:03
  • @l0b0 hmmm but I just ask it for knowledge purpose because I have a firm believe in the answers that I will get from here apart from that I have did prior lot of google but didn't get any satisfactory answer Commented Apr 9, 2015 at 10:43