参数数组和普通数组

举一个数组求和的例子

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace _011_参数数组{    class Program    {        static int Sum(int[] num)        {            int sum = 0;            foreach(int tem in num)            {                sum += tem;            }            return sum;        }        static int Sum2(params int[] num)        //参数数组关键字 params        {            int sum = 0;            foreach (int tem in num)            {                sum += tem;            }            return sum;        }        static void Main(string[] args)        {            int[] sss = new int[] { 23, 23, 123, 123, 123 };            Console.WriteLine(Sum(sss));            Console.WriteLine(Sum2(22, 56, 7, 4, 34, 34));            //可以直接填入数字，无需定义数组            Console.ReadKey();        }    }}