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(, , , , );
             Console.WriteLine("多个整数之和为:{0}", sum);
             Console.ReadKey();
         }
 
         static int Test(params int[] arr)
         {
             int sum = ;
             for (int i = ; 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 = ; 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 = ;
             for (int i = ; i < arr.Length; i++)
             {
                 sum += arr[i];
             }
             return sum;
         }
     }
 }