Essential C++

Exercise 4.3

Consider the following global data:

					string program_name;
					string version_stamp;
					int version_number;
					int tests_run;
					int tests_passed;
				

Write a class to wrap around this data.

Why might we wish to do this? By wrapping these global objects within a class, we encapsulate their direct access within a small set of functions. Moreover, the names of the objects are now hidden behind the scope of the class and cannot clash with other global entities. Because we wish only a single instance of each global object, we declare each one to be a static class member as well as the member functions that access them.

 #include <string> using std::string; class globalWrapper { public: static int tests_passed() { return _tests_passed; } static int tests_run() ...