namespace Lesson15_lambda表达式练习
{
    class Program
    {
        static void Main(string[] args)
        {
            a1()();
            a2()();
        }
        
        public static Action a1()
        {
            Action action = null;
            for (int i = 1; i <= 10; i++)
            {
                int index = i;
                action += delegate()
                {
                    Console.WriteLine(index);
                };
            }
            return action;
        }
        public static Action a2()
        {
            Action action = null;
            for (int i = 1; i <= 10; i++)
            {
                int index = i;
                action += () => Show(index);
            }
            return action;
        }
        public static Action a3()
        {
            Action action = null;
            for (int i = 1; i <= 10; i++)
            {
                int index = i;
                action += () => Show(index);
            }
            return action;
        }
        static void Show(int x)
        {
            Console.WriteLine(x);
        }
    }

}