简单的lambda表达式 使用委托实现5以内的加减乘除

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

namespace Linq
{

    public class Product
    {

        private string name;
        private int price;


        public Product(int _price, string _name)
        {
            Name = _name;
            Price = _price;
        }
        public string Name
        {
            get
            {
                return name;
            }

            set
            {
                name = value;
            }
        }

        public int Price
        {
            get
            {
                return price;
            }

            set
            {
                price = value;
            }
        }
    }

    delegate int TwoNums(int x, int y);
    
    
        
    
    class Program
    {

        static void Opera(TwoNums twoNums)
        {

            for (int x = 1; x <= 5; x++)
            {
                for (int y = 1; y <= 5; y++)
                {
                    int Result = twoNums(x,y);

                    Console.WriteLine("({0},{1})={2}",x,y,Result);

                    if (y != 5)
                    {
                        Console.WriteLine(",");
                    }
                }
                Console.WriteLine(",");
            }


        }
        static void Main(string[] args)
        {
            #region
            //List<Product> product = new List<Product>();

            //product.Add(new Product(10, "name1"));
            //product.Add(new Product(500, "name2"));
            //product.Add(new Product(72, "name5"));
            //product.Add(new Product(9, "name4"));


            ////   List<Product> cheapest = product.FindAll(delegate (Product p) { return p.Price < 25 || p.Name.Contains("5"); });



            //List<Product> cheapest = product.FindAll(p => p.Price == 500 || p.Name.Contains("5"));

            ////  因为sort 方法是 void 类型 所以 直接执行后 product发生改变

            ////            降序：

            ////lstroot.Sort((x, y) => y.static_count.CompareTo(x.static_count));

            ////            升序：

            ////lstroot.Sort((x, y) => x.static_count.CompareTo(y.static_count));
            //product.Sort((x, y) => x.Price.CompareTo(y.Price));



            //foreach (var ss in cheapest)
            //{
            //    Console.WriteLine(ss.Name+":"+ss.Price);


            //}




            //Console.ReadKey();
            #endregion

            Opera((x, y) => x + y);

            Opera((x, y) => x - y);
            Opera((x, y) => x * y);
            Opera((x, y) => x / y);

            Console.ReadLine();

            
        }
    }
}