out参数的使用

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

namespace ConsoleApp1
{
    
    class Program
    {
        /// <summary>
        /// 计算一个整数数组的最大值,最小值,平均值,总和
        /// </summary>
        /// <param name="nums">数组的每一个元素</param>
        /// <param name="max">数组的最大值</param>
        /// <param name="min">数组的最小值</param>
        /// <param name="sum">数组的总和</param>
        /// <param name="avg">数组的平均值</param>
        public static void Test(int[] nums,out int max,out int min,out int sum,out int avg)
        {
            max = nums[0];
            min = nums[0];
            sum = 0;
            for(int i = 0; i< nums.Length; i++)
            {
                if (nums[i] > max)
                {
                    max = nums[i];
                }

                if (nums[i] < min)
                {
                    min = nums[i];
                }

                sum += nums[i];
            }

            avg = sum / nums.Length;
        }
        static void Main(string[] args)
        {
            int[] testNum = { 1, 4, 2, 5, 3 };
            Test(testNum, out int max, out int min, out int sum, out int avg);
            Console.WriteLine("最大值:"+max);
            Console.WriteLine("最小值:"+min);
            Console.WriteLine("总和:"+sum);
            Console.WriteLine("平均值:"+avg);
            Console.ReadKey();

        }
    }
}