program should receive two filenames as command line arguments, the new books file and request file, which the program should read in. The list of new books and list of requested books should should be stored in only two std::vector containers. Because some code to open these two files will probably be equivalent, you are encourage to write generic functions in order to avoid code duplication.

You should write a class for representing book as a combination of both the ISNB number and type, so that each vector is an object of that class. For debugging purposes, you can overload the << operator to print positional vectors in a pretty way.

please help me to write code as a class. please write in C++ language.