Which header file is required in C++ to use OOP? Which header file is required in C++ to use OOP? A. iostream.h B. stdio.h C. stdlib.h D. OOP can be used without using any header file View Answer ANSWER: D) OOP can be used without using any header file Explanation : OOP can be implimented without using any header file. Because OOP depends on concept of classes not header files.
