Write a C# Sharp program to compute the sum of the numbers in a given array except those numbers starting with 5 followed by at least one 6. Return 0 if the given array has no integer

using System;
namespace exercises
{
   class Program
    {
        static void Main(string[] args)
        {
         Console.WriteLine("Sum of the numbers of the said array except those numbers starting with 5 followed by at least one 6: ");
         Console.WriteLine(test(new[] { 5, 6, 1, 5, 6, 9, 10, 17, 5, 6 }));
         Console.WriteLine(test(new[] { 5, 6, 1, 5, 6, 9, 10, 17 }));
         Console.WriteLine(test(new[] { 1, 5, 6, 9, 10, 17, 5, 6 }));
         Console.WriteLine(test(new[] { 1, 5, 9, 10, 17, 5, 6 }));
         Console.WriteLine(test(new[] { 1, 5, 9, 10, 17, 5}));
        }
    static int test(int[] nums)
       {
        int sum = 0;
        int inSection = 0;
        int flag = 0;
      for (int i = 0; i < nums.Length; i++)
            {
                inSection = 0;
                if (nums[i] == 5)
                {
                inSection = 0;
                flag = 1;
                }
                if (inSection == 0 && nums[i] == 6)
                {
                  if (flag == 1)
                  {
                  sum = sum - 5;
                  inSection = 1;
                  }
                   flag = 0;
                }
                if (inSection == 0)
                {
                  sum += nums[i];
                }
            }
            return sum;
      }
   }
}