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

puts "問題!"
srand()
seikaisuu = 0

while true
  kazuiti = rand(99) + 1
  kazuni = rand(99) + 1
  printf("%d*%d\n", kazuiti, kazuni)
  print "答えを入力："
  kotae = gets.chomp.to_i
  if kotae == kazuiti*kazuni
    puts "正解!!"
    seikaisuu+=1
  else
    puts "不正解..."
    printf("%d問正解したよ!\n", seikaisuu)
    break
  end
end