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Ruby / hanbun.rb
@OOKAWA Chiyura OOKAWA Chiyura on 5 Nov 2022 178 bytes 2022-11-05 13:55:33
#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

deh hanbun(x)
  x/2
end
puts "数値を入れてください。半分の値にします。"
y = gets.to_i
printf("%df\n", hanbun(y))