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Hongzhan Chen
20 lines
294 B
Ruby
20 lines
294 B
Ruby
def prime(n)
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puts "That's not an integer." unless n.is_a? Integer
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is_prime = true
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for i in 2..n-1
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if n % i == 0
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is_prime = false
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end
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end
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if is_prime
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puts "#{n} is prime!"
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else
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puts "#{n} is not prime."
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end
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end
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prime(2)
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prime(9)
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prime(11)
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prime(51)
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prime(97) |