using System;
public class Program
{
public static void Main()
int[] numbers = { 5, 3, 2, 7, 1, 8, 5, 16};
int? max = null;
for (int i = 0; i < numbers.Length; i++ )
double a = numbers [i] % 4;
if (a==0)
if (max == null)
max = numbers[i];
}
else if (numbers [i] > max)
max = numbers [i];
Console.WriteLine("max="+ max);