RosettaCodeData/Task/Bulls-and-cows/00DESCRIPTION
2017-09-25 22:28:19 +02:00

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[[wp:Bulls and Cows|Bulls and Cows]]   is an old game played with pencil and paper that was later implemented using computers.
;Task:
Create a four digit random number from the digits   '''1'''   to   '''9''',   without duplication.
The program should:
::::::*   ask for guesses to this number
::::::*   reject guesses that are malformed
::::::*   print the score for the guess
The score is computed as:
# The player wins if the guess is the same as the randomly chosen number, and the program ends.
# A score of one '''bull''' is accumulated for each digit in the guess that equals the corresponding digit in the randomly chosen initial number.
# A score of one '''cow''' is accumulated for each digit in the guess that also appears in the randomly chosen number, but in the wrong position.
;Related tasks:
*   [[Bulls and cows/Player]]
*   [[Guess the number]]
*   [[Guess the number/With Feedback]]
*   [[Mastermind]]
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