public void addStudent(Student student)
 {
     int n = this.students.Count;
     if (n < maxStudents)
     {
         this.students.Add(student);
     }
     else
     {
         Console.WriteLine("Array of students is full.");
     }
 }
        static void Main(string[] args)
        {
            int i,grade;

            Student s1 = new Student(), s2 = new Student(), s3 = new Student();
            Teacher t1 = new Teacher(), t2 = new Teacher();
            Course ProgrammingWithCSharp = new Course("Programming with C#");

            //set all students' name
            s1.FirstName = "S1_F";
            s2.FirstName = "S2_F";
            s3.FirstName = "S3_F";

            s1.LastName = "S1_L";
            s2.LastName = "S2_L";
            s3.LastName = "S3_L";

            //set all students' grades
            s1.EnterGrades();
            s2.EnterGrades();
            s3.EnterGrades();

            //add all student to course class
            ProgrammingWithCSharp.AddStudent(s1);
            ProgrammingWithCSharp.AddStudent(s2);
            ProgrammingWithCSharp.AddStudent(s3);

            //add two teacher to course class
            ProgrammingWithCSharp.AddTeacher(t1);
            ProgrammingWithCSharp.AddTeacher(t2);

            //add course to degree
            Degree Bachelor = new Degree("Bachelor");
            Bachelor.AddCourse(ProgrammingWithCSharp);

            //add degree to uprogram
            UProgram InformationTechnology = new UProgram("Information Technology");
            InformationTechnology.AddDegree(Bachelor);

            //list students' name
            ProgrammingWithCSharp.ListStudents();

            //list all students' grades
            s1.ListGrades();
            s2.ListGrades();
            s3.ListGrades();

            Console.ReadLine();
        }
        static void Main(string[] args)
        {
            Student student1 = new Student("Diego", "Caridei", new DateTime(1990, 10, 22), "*****@*****.**");
            Student student2 = new Student("Michele", "Sannino", new DateTime(1950, 03, 12), "*****@*****.**");
            Student student3 = new Student("Sara", "task", new DateTime(1985, 04, 03), "*****@*****.**");
            ArrayList students = new ArrayList();
            students.Add(student1);
            students.Add(student2);
            students.Add(student3);

            foreach (Student s in students)
            {
                for (int i = 0; i < 5; i++)
                {
                    double grade = i + 5.53;
                    s.addGrade(grade);
                }
            }

            Course course = new Course("Programming with C#", 15);

            course.addStudent(student1);
            course.addStudent(student2);
            course.addStudent(student3);

            foreach (Student s in students)
            {
                s.popGrade();
                s.addGrade(10);
            }

            foreach (Student s in students)
            {
                double grade5 = s.popGrade();
                double grade4 = s.popGrade();
                s.popGrade();
                s.addGrade(0);
                s.addGrade(grade4);
                s.addGrade(grade5);
            }

            course.listStudents();
            Console.ReadKey();
        }
 public void AddStudent(Student s)
 {
     if (student_num >= SIZE)
         throw new IndexOutOfRangeException("Number of students can't be more than 3");
     arr_student.Add(s);
 }