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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3184 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
9 lines
125 B
Ruby
9 lines
125 B
Ruby
def fact(n)
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return 1 if n == 0
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f = 1
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n.downto(1) do |i|
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f *= i
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end
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return f
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end
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print fact(ARGV[0].to_i), "\n"
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