Navigating C++ and Object-Oriented Design

5.13. Exercises

1:

Study the following class definition. class X { private: double m; static double n; X member1; // illegal static X member2; // legal public: X(double d = m); // illegal X(int, double d = n); // legal void f(double v = n); // legal }; Note that static data members may appear as default arguments to member functions and constructors of the same class. Also, static data members may be objects of the class they belong to. Can you explain why these statements are legal with static data members but illegal for nonstatic members?

2:

Compile the following program and compare its output on your machine to what is shown here. // count.C - Object creation and deletion #include <iostream.h> class X { private: static int count; public: ...