Object Oriented Programming C++ using class

NEED HELP WITH THE PROGRAMMING

Need to develop gym management system.

The data to store about each member is

User ID, Name, for how many months their membership is valid

The program should allow the following commands:

Create [id] [name] will try to create a new member with ID [id], name [name] and 0 months of subscription;

delete [id] will try to remove the member with ID [id];

extend [id] [n] will try to extend the membership number of months of the member by [n];

cancel [id] will try to set the number of months of subscription to 0 of the member with the ID [id]

quit will stop the execution of the program

Limit the maximum members to ten