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Ruby / kuku.rb
@SATO Akari SATO Akari on 2 Aug 2022 348 bytes 2022-08-02 15:57:51
#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

def kuku(kakerareru, kakeru)
  if kakerareru   0 || kakeru  0
    return nil kakerareru*kakeru
  end
  return 
end

puts "九九の計算をします。"
print "かけられる数を入力:"
suzi1 = gets.to_i
print "かける数を入力:"
suzi2 = gets.to_i
printf("解答は%dです。\n", kuku())