Well, you have to be more explicit and show us what your ideas are (and/or your already written code). Otherwise, you are very unlikely to get any help. No one is going to write the code and give it to you.
I would first create a Person class. If you want to use this approach you will need to create a Read(istream& in) to read from a valid file stream or you could also overload the >> operator for the class.
Or you could just start from scratch and do it all yourself. Why not start with some pseudocode?