these are the IDs of some sequences that I need to keep them in a calss or data structure and later on call each of these sequences by these IDs.
Thanks
hash
So basically you plan on doing a string comparison search to match an ID such as "M00128" to an element in the array, right?
Since this will always give you the number 128, I think it would be easier and faster to just convert the ID to a integer using atoi(ID+1).