static void Main(string[] args)
{
Console.WriteLine("Hello World!");
MyEnum myEnum = new MyEnum();
myEnum.Set();
NullCond nc = new NullCond();
Person p = null;
nc.TakePerson(p);
Student s = new Student("Ivanov");
s.SetAge(20);
Student s1 = new Student("Petrov");
s1.SetAge(20);
Console.WriteLine(Student.UNIVERSITY);
Console.WriteLine(Student.counter);
Console.WriteLine("\nPROPERTIES: ");
Calculation calc = new Calculation();
calc.SetX(10);
Console.WriteLine(calc.GetX());
calc.SetY = 12;
// Console.WriteLine(calc.SetY);
Console.WriteLine(calc.GetY);
calc.Y = 12;
int a = calc.Y;
calc.Name = "Point 1";
// calc.Operation = '-'; set private
Console.WriteLine(calc.Operation);
// Console.WriteLine(calc.Name);
Console.WriteLine(Settings.Factorial(5));
if (Settings.Key != null)
{
}
}
