Answer1

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	WHAT'S YOUR ENGINEERING QUOTIENT?
•Step up to the Plate. Problem 1—Itıs not uncommon for C programmers to write code that resembles object-oriented programming techniques. The following structure is a good example of a C implementation of an object. Why would a C++ class be more efficient in terms of data space than this C construct? struct c_obj { int x, y; void (create)(); void (show)(); void (hide)(); void (delete)(); }; Answer: The C++ equivalent, shown here, is more efficient than the typical C equivalent because the C++ class does not actually store a pointer for each virtual function. Instead, it stores a pointer to an array of functions (virtual function table) so each instance of cpp_obj is smaller than each struct c_obj. class cpp_obj { public: int x, y; void create(void); void show(void); void hide(void); void delete(void); }; 4-00 For questions or comments about Test Your EQ, e-mail eq@circuitcellar.com.