namespace Fproject
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] questions =
            {
                "Юніті vs Unreal?",
                "int vs float?",
                "Львівське Різдвяне vs Балтіка?",
                "A vs B?"
            };
            string[] rightAnswers =
            {
                "Unity",
                "inteFLoat",
                "Lvivske",
                "AB"
            };

            Random rnd = new Random();
            var index = rnd.Next(0, questions.Length);
            Game(questions, rightAnswers, rnd, index);

        }

        static void Game(string[] questions, string[] rightAnswers, Random rnd, int index)
        {
            while (true)
            {
                Console.WriteLine(questions[index]);
                int prevIndex = index;
                string userAnswer = Console.ReadLine();
                CheckRightIndex(rightAnswers, rnd, index, userAnswer);
                index = UpdateIndex(questions, rnd, index, prevIndex);
            }
        }

        static void CheckRightIndex(string[] rightAnswers, Random rnd, int index, string userAnswer)
        {
            if (rightAnswers[index].Equals(userAnswer))
            {
                Console.ForegroundColor = ConsoleColor.Green;
                Console.WriteLine("GOOOD");
                Console.ResetColor();
            }
            else
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("BADDDDDDDDDD");
                Console.ResetColor();
            }
        }

        static int UpdateIndex(string[] questions, Random rnd, int index, int prevIndex)
        {
            while (index == prevIndex)
            {
                index = rnd.Next(0, questions.Length);
            }

            return index;
        }
    }
}