操作符的覆盖 operator

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace _1.自定义
{
    class Program
    {
        static void Main(string[] args)
        {
            MyFriden lily = new MyFriden();
            lily.Age = 10;
            MyFriden lucy = new MyFriden();
            lucy.Age = 20;

            int ageSum = lily + lucy;
            Console.WriteLine(ageSum);
            Console.Read();
        }
        ///// <summary>
        ///// 操作符的覆盖
        ///// </summary>
        ///// <returns></returns>
        //public static int operator +(int n, int m)
        //{//不可以这样，太不安全了，微软不会给我们这样的权限的
        //    return n + m;
        //}

        /// <summary>
        /// 两个人的年龄和
        /// </summary>
        /// <returns></returns>

        /// <summary>
        /// 朋友类
        /// </summary>
        public class MyFriden
        {
            public int Age { get; set; }
            public static int operator +(MyFriden a, MyFriden b)
            {
                return a.Age + b.Age;
            }
        }


    }
}