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Ruby / hanbun.rb
@SATO Akari SATO Akari on 2 Aug 2022 177 bytes 2022-08-02 15:57:51
#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

def hanbun(x)
  x/2
end

puts "数を入力してください。半分の数にします"
y = gets.to_f
printf("%.1f\n", hanbun(y))