C plus plus abstract class | abstract class - a C plus plus class | class defining an C plus plus interface | interface only; used as a C plus plus base class | base class. Declaring a C plus plus member function | member function C plus plus pure virtual | pure virtual makes its C plus plus class | class C plus plus abstract | abstract and prevents creation of C plus plus objects | objects of the C plus plus abstract class | abstract class. Use of C plus plus abstract classes | abstract classes is one of the most C plus plus effective | effective ways of minimizing the impact of changes in a C plus plus program | C++ program and for minimizing C plus plus compilation time | compilation time. Example. TC plus plus PL | TC++PL 2.5.4, 12.4.2, D&E 13.2. (BSCppG 2012)