static void Main(string[] args)
        {
            while (true)
            {
                string a;
                Console.WriteLine("请问你有房吗：");
                a = Console.ReadLine();
                if (a == "有")
                {
                    Console.WriteLine("请问你有车吗：");
                    a = Console.ReadLine();
                    if (a == "有")
                    {                                                                              //主要运动if else的嵌套。。 注意嵌套的if else 要一块打，不然会很难分清；
                        Console.WriteLine("请问你有钱吗：");
                        a = Console.ReadLine();
                        if (a == "有")
                        {
                            Console.WriteLine("结婚吧");
                        }
                        else
                        {
                            Console.WriteLine("没钱吃什么");
                        }
                    }
                    else
                    {
                        Console.WriteLine("没车你来干什么");
                    }

}
                else
                {
                    Console.WriteLine("房子都没有住大街上吗");
                }