You will implement and test a small class called statistician, which is similar to some of the small classes in Chapter 2 of the text. iman Purposes: Ensure that you can write a small class that meets a precise specification. Make sure you understand how to write a class that is separated into a header file and an implementation file. Give you experience in using a test program to track down bugs in a class's implementation. On M LEARNING OBJECTIVES When you complete Chapter 2, you will be able to. specify and design new classes using a pattern of information hiding with private member variables, const member functions, and modification member functions. write a header file and a separate implementation file for any new class. create and use namespaces to organize new classes. use your new classes (and at least one STL class) in small test programs. use the automatic assignment operator and the automatic copy constructor. identify situations in which member functions and constructors can benefit from using default arguments. corectly identify and use value parameters, reference parameters, and const reference parameters. overload certain binary operators and input/output operators for new classes. identify the need for friend functions of a new class and correctly implement such nonmember functions (which are sometimes overloaded operators). Uuse STL classes, such as the pair class, in an application program. CHAPTER CONTENTS 2.1 Classes and Members 2.2 Constructors 2.3 Using a Namespace, Header File, and Implementation File 2.4 Classes and Parameters 2.5 Operator Overloading 2.6 The Standard Template Library and the Pair Class Chapter Summary Solutions to Self-Test Exercises Programming Projects