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20 lines
384 B
Turing
20 lines
384 B
Turing
% Accepts a number and calculates its factorial
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function factorial (n: int) : real
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if n = 0 then
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result 1
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else
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result n * factorial (n - 1)
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end if
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end factorial
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var n: int
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loop
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put "Please input an integer: " ..
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get n
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exit when n >= 0
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put "Input must be a non-negative integer."
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end loop
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put "The factorial of ", n, " is ", factorial (n)
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