write a function to receive a whole number and return true if the digits are in ascending order from right to left do not use string

public static bool checkDigits(int num)
        {
            bool ascending = true;
            while (num > 10)
            {
                int onesDigits = num % 10;
                int tensDigits = (num / 10) % 10;
                if (onesDigits < tensDigits)
                {
                    ascending = false;
                    return ascending;
                }
                num = num / 10;
            }
            return ascending;
        }