Solution Review: Finding the Second Maximum Value in an Array

namespace chapter_2
{
    class Challenge7
    {
        //Find Second Maximum Value in an Array
        static int findSecondMaximum(int []arr, int size)
        {
            int max = Int32.MinValue;
            int secondmax = Int32.MinValue;
            // Keep track of the maximum value, whenever the value at an array index is greater
            // than the current maximum value, then make that max value second max value and
            // make that index value maximum value 
            for (int i = 0; i < size; i++)
            {
                if (arr[i] > max)
                    max = arr[i];
            }//end of for-loop
            for (int i = 0; i < size; i++)
            {
                if (arr[i] > secondmax && arr[i] < max)
                    secondmax = arr[i];
            }//end of for-loop
            return secondmax;
        }
        static void Main(string[] args)
        {
            int size = 5;
            int []arr = { -2, -33, -10, -33, -456 };
            Console.Write("Array: ");
            for (int i = 0; i < size; i++)
                Console.Write(arr[i] + " ");
            Console.WriteLine("");
            int secMax = findSecondMaximum(arr, size);
            Console.WriteLine("Second maximum: " + secMax);
            
            return ;
        }
    }
}