static void Main(string[] args)
{
/*Student a = new Student();
* a.SetStudentInfo();
* a.SetGrades(a.GradesProgrammingArray);
* a.SetGrades(a.GradesProgrammingArray);
* a.ShowStudentInfo();*/
Point a = new Point(4, 6, 10);
Point b = new Point(7, 9, 11);
a.ShowPoint();
b.ShowPoint();
Console.WriteLine(StaticClass.Length(a, b));
}