public static void Main8() { MyOffice m1 = new MyOffice(4); Programmer p1 = new Programmer("PPP", 10, 10, 1990, 101, 1000, 10, 100); SalesMgr s1 = new SalesMgr("SSS", 20, 10, 1980, 202, 2000, 200); Admin a1 = new Admin("AAA", 30, 10, 1980, 303, 3000, 300); //[] cannot be used with non array m1[1] = p1; m1[3] = s1; Console.WriteLine(m1); }