factor/extra/numbers-game/numbers-game.factor

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USING: combinators io kernel math.order math.parser random ;
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IN: numbers-game
: guess-banner ( -- )
"I'm thinking of a number between 0 and 100." print flush ;
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: guess-number ( -- n )
"Enter your guess: " write flush readln string>number ;
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: correct? ( actual guess -- ? )
<=> {
{ +lt+ [ "Too high" print flush f ] }
{ +eq+ [ "Correct - you win!" print flush t ] }
{ +gt+ [ "Too low" print flush f ] }
} case ;
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: numbers-game-loop ( actual -- )
[ dup guess-number correct? not ] loop drop ;
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: numbers-game ( -- )
guess-banner 100 random numbers-game-loop ;
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MAIN: numbers-game