Write a C# Sharp program to compute the sum of the elements of an given array of integers

using System;
namespace exercises
{
   class Program
    {       
        static void Main(string[] args)
        {
            Console.WriteLine(test(new[] { 10, 20, 30, 40, 50 }));
            Console.WriteLine(test(new[] { 10, 20, -30, -40, 50 })); 
        }     
       public static int  test(int[] a1)
          {
            return a1[0] + a1[1] + a1[2] + a1[3] + a1[4];
          } 
   }
}