写一方法计算实现任意个整数之和.在主调函数中调用该函数，实现任意个数之和。（使用params参数）

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

namespace ConsoleApplication7
{
    class Program
    {
        static void Main(string[] args)
        {
            int sum = Test(1, 2, 3, 4, 5);
            Console.WriteLine("多个整数之和为:{0}", sum);
            Console.ReadKey();
        }

        static int Test(params int[] arr)
        {
            int sum = 0;
            for (int i = 0; i < arr.Length; i++)
            {
                sum += arr[i];
            }
            return sum;
        }
    }
}

改进后：

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

namespace ConsoleApplication7
{
    class Program
    {
        static void Main(string[] args)
        {
            
            Console.WriteLine("请输入需要相加的整数个数");
            int i = Convert.ToInt32(Console.ReadLine());
            int[] readint = new int[i];
            for (int k = 0; k < i; k++)
            {
                Console.WriteLine("请输入需要相加的整数");
                readint[k] = Convert.ToInt32(Console.ReadLine());
            }
            int sum = Test(readint);
            Console.WriteLine("多个整数之和为:{0}", sum);
            Console.ReadKey();
        }

        static int Test(params int[] arr)
        {
            int sum = 0;
            for (int i = 0; i < arr.Length; i++)
            {
                sum += arr[i];
            }
            return sum;
        }
    }
}