James K. Peckol of the University of Washington guides viewers through the C++ programming language in this 12-part, 4-video presentation, based on the second edition of the book by H. M. Deitel and P. J. Deitel. Inheritance and class heirarchies, abstra ct classes, and information hiding and encapsulation in a derivation heirarchy are investigated in this fourth video. Study guide available; includes book, cd-rom (system requirements: Windows 95 or higher, Solaris 2.5 or higher, 20MB hard disk space, 16 MB RAM, 4x cd-rom drive), user guide.