public bool numberequal(int sum, int[] array)

    {

        int i, k, j;
        bool answer = false;

        for (i = 0; i < array.Length - 2; i++)
        {
            for (k = i + 1; k < array.Length - 1; k++)
            {
                for (j = k + 1; j < array.Length; j++)
                {
                    if (array[i] + array[k] + array[j] == sum)
                    {
                        answer = true;
                        return true;
                    }
                }
            }
        }

        return answer;
    }