32 lines
519 B
FortranFixed
32 lines
519 B
FortranFixed
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program test_choose
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implicit none
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write (*, '(i0)') choose (5, 3)
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contains
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function factorial (n) result (res)
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implicit none
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integer, intent (in) :: n
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integer :: res
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integer :: i
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res = product ((/(i, i = 1, n)/))
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end function factorial
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function choose (n, k) result (res)
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implicit none
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integer, intent (in) :: n
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integer, intent (in) :: k
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integer :: res
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res = factorial (n) / (factorial (k) * factorial (n - k))
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end function choose
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end program test_choose
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