Func and Action in C#

using System;

namespace Delegates
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] numbers = new int[] { 1, 2, 3, 4, 5 };
            Func<int, int> sum = x => x + 100; // except int and return int
            Func<int, int> multiply = x => x * 2;
            Action<int> print = x => Console.WriteLine(x); // except int, return always void

            foreach (var num in numbers)
            {
                Console.WriteLine(sum(num));
                var multiplyResult = multiply(num);
                print(multiplyResult);
                Console.WriteLine("--------------------");
            }
        }
    }
}