#include <iostream>
 #include <string> // class GradeBook uses C++ standard string class
 using namespace std;
 
// GradeBook class definition
class GradeBook
{
  public:
    GradeBook( string ); // constructor that initializes courseName    
    void setCourseName( string ); // function that sets the course name
    string getCourseName(); // function that gets the course name      
    void displayMessage(); // function that displays a welcome message 
  private:
   string courseName; // course name for this GradeBook
}; // end class GradeBook