Create the function `addOneInBase8`

. The arguments of the functions are the pointer to the first element of the sequence and its length. The sequence represents the number `n`

in the base 8. The function should update the sequence so it represents the number `n+1`

in base 8.

Your code should replace the text `// ??? //`

below.

void addOneInBase8(long* b, long M){ // ??? // }