static void Test1()
{
Student st = new Student("Athar");
Teacher tchr = new Teacher();
tchr.Display(st.Display);
DeplayName pn1 = new DeplayName(PrintName);
DeplayName pn2 = new DeplayName(PrintName);
DeplayName pn3 = new DeplayName(PrintName);
DeplayName pn4 = new DeplayName(PrintName);
DeplayName pn5 = pn1 + pn2 + pn3 + pn4;
pn5();
}
public void Display(DeplayName disp)
{
disp.Invoke();
}