#!/usr/bin/env ruby
-*- coding: utf-8 -*-

puts"第一問"
puts"65+45=?"
puts"1:100"
puts"2;110"
puts"3:120"

while true
  print "答を入力:"
  kotae = gets.chomp.to_i
  if kotae == 1
    puts"不正解!"
    break
  elsif
    kotae == 2
    puts"正解!"
    break
  elsif
    kotae == 3
    puts"不正解!"
    break
  else
    puts"その選択肢はないよ!"
    redo
  end  
end