Rock Paper Scissors

December 10, 2013

Today’s exercise is our five hundredth! It’s hard to believe. I remember writing the fiftieth exercise and thinking I would never get to a hundred. Even after all this practice it is hard to write two exercises every week, but your comments and private emails and referrals from other web sites sustain me. Many thanks to all my readers.

Our tradition for these milestone exercises is to have a party, which means we need a game: so we write one. Today’s exercise is to write an interactive rock-paper-scissors game: rock blunts scissors, paper wraps rock, scissors cut paper.

Your task is to write a program to play rock-paper-scissors with a human player, keeping score as you go. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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