I am trying to create a new account number in the form of a string. I need to append '4412' to the the last 9 digits of the above account numbers. So for the results is:
'4412154045001' '4412926665001' - Account Numbers have 9 digits so this is easy '4412615017' - Only has 6 digits so take the whole account number '4412976936151' - Has 10 digits so drop first and append to '4412' etc.
So my problem is difficult in that I need to use sscanf to find the last 9 digits of the account number (even if it has less or more) and then use strcat to append '4412' to the beginning. A few poor attempts:
These obviously do not work and I can seem to find a metacharacter in the sscanf documentation for indicating a way to start at the end of the string count back 8 characters and return the result. Does it sscanf always have to read left to right? Any help would be much appreciated. Thanks.