Adds an array of integers using a point (don't do this!)

ArrayPointerAdder.cs

internal unsafe class ArrayPointerAdder : IIntegerAdder
{
    public int Add(int[] values)
    {
        int sum = 0;
        int count = values.Length;
        fixed (int *p = values)
        {
            for (int i = 0; i < count; i++)
            {
                sum += p[i];
            }
        }
        return sum;
    }
}