 int i = 8;
    while (sin > 0) {
        sin_array[i] = sin % 10;
        sin /= 10;
        i--;
    }
    // Return 1 if the int does not have 9 digits.
    if (i != 0) {
        return 1;
    }
    return 0;
takes an integer and stores the digits of the integer in an array. The code returns 1 if the integer is not 9 digits long.