1   // Fig. 3.5: fig03_05.cpp
 2   // Define class GradeBook that contains a courseName data member
 3   // and member functions to set and get its value;
 4   // Create and manipulate a GradeBook object with these functions.
 5   #include <iostream>
 6   #include <string> // program uses C++ standard string class
 7   using namespace std;
 8
 9   // GradeBook class definition
10   class GradeBook
11   {
12   public:
13      // function that sets the course name                       
14      void setCourseName( string name )                           
15      {                                                           
16         courseName = name; // store the course name in the object
17      } // end function setCourseName                             
18
19      // function that gets the course name                       
20      string getCourseName() const                                
21      {                                                           
22         return courseName; // return the object's courseName     
23      } // end function getCourseName                             
24
25      // function that displays a welcome message
26      void displayMessage() const
27      {
28         // this statement calls getCourseName to get the
29         // name of the course this GradeBook represents
30         cout << "Welcome to the grade book for " << getCourseName() << "!"
31            << endl;
32      } // end function displayMessage
33   private:                                               
34      string courseName; // course name for this GradeBook
35   }; // end class GradeBook
36
37   // function main begins program execution
38   int main()
39   {
40      string nameOfCourse; // string of characters to store the course name
41      GradeBook myGradeBook; // create a GradeBook object named myGradeBook
42
43      // display initial value of courseName
44      cout << "Initial course name is: " << myGradeBook.getCourseName()
45         << endl;
46
47      // prompt for, input and set course name
48      cout << " Please enter the course name:" << endl;
49      getline( cin, nameOfCourse ); // read a course name with blanks
50      myGradeBook.setCourseName( nameOfCourse ); // set the course name
51
52      cout << endl; // outputs a blank line
53      myGradeBook.displayMessage(); // display message with new course name
54   } // end main