For our example there would be one entry. Diagrammatically you have: That in a nutshell is inheritance and virtual functions. This isn’t a tutorial but just a glimpse into this feature of C++.

Program spawns 6 "travel agents" as child process from the main function. Children are created with the fork() function. Each process has access to the seats on a flight and can book them.

I'm trying to use an iterator of a vector of pointers to objects of a class I've written, to proceed through each object in the vector and call a member function of that object. It's not working.