// Main method begins program execution
public static void Main(string[] args)
{
/*// create GradeBook object
* GradeBook gradeBook1 = new GradeBook("CS101 Introduction to C# Programming");
* GradeBook gradeBook2 = new GradeBook("CS102 Data Structures in C#");
*
* // display initial value of courseName for each GradeBook
* Console.WriteLine("gradeBook1 course name is: {0}",gradeBook1.CourseName);
* Console.WriteLine("gradeBook2 course name is: {0}",gradeBook2.CourseName); */
GradeBook gradeBook1 = new GradeBook("CS101 Introduction to C# Programming", "Ivanov");
gradeBook1.DisplayMessage();
Console.WriteLine(gradeBook1.GetGradeBookTitleCourseStart());
}