Chapter 3: Introduction to Classes, Objects and Strings

• 3.2 Defining a Class with a Member Function
• 3.3 Defining a Member Function with a Parameter
• 3.4 Data Members, set Functions and get Functions
• 3.5 Initializing Objects with Constructors
• 3.6 Placing a Class in a Separate File for Reusability
  • GradeBook class definition in a separate file
  • main program will #include "GradeBook.h"
  • You compile the main program as usual: "g++ fig03_10.cpp". The compiler will automatically include the contents of GradeBook.h, as you specified.
• 3.7 Separating Interface from Implementation
  • GradeBook.h - Defining a Class's Interface with Function Prototypes
  • GradeBook.cpp - Defining Member Functions in a Separate Source-Code File
  • main program remains unchanged.
  • You compile the main program and the class GradeBook independently. Then link them to generate an executable program.:
    1. g++ -c fig03_13.cpp
    2. g++ -c GradeBook.cpp
    3. g++ fig03_13.o GradeBook.o -o GradeBook
• 3.8 Validating Data with set Functions
  • The implementation of setCourseName() is modified to make sure the length of courseName is no longer than 25 characters.
  • The class interface remains unchanged. The main program need not change, but here it adds some statements to demonstrate how it validates the length of data member courseName.