while( index < MAX_Q ){
        std::cout << "第" << index << "問!" << std::endl;
        std::cout << questions[index] << "?" << std::endl;
        
        std::cout << "回答:";
        getline(std::cin, input, '\n');

        if( 0 == input.compare( answer[index] ) ){
            std::cout << "正解!" << std::endl;
            ++tokuten;
        }else
            std::cout << "ばーか!" << std::endl;
        ++index;
        
        std::cout << std::endl;
    }

    std::cout << "あなたの成績は" << tokuten << "点でした!" << std::endl;
}