The program that solves the examination-results prolem is shown in Fig. 4.12. This example does not contain a class—it contains just a source code file with function
main performing all the application’s work. In this chapter and in Chapter 3, you’ve seen examples consisting of one class (including the header and source code files for this class), as well as another source code file testing the class. This source code file contained function
main, which created an object of the class and called its member functions. Occasionally, when it does not make sense to try to create a reusable class to demonstrate a concept, we’ll use an example contained entirely within the
main function of a single source code ...