24. public classSystem.Object { public virtualobjectEquals(objectobj); public virtualintGetHashCode(); publicTypeGetType(); public virtualstringToString(); }
28. public classContenitore { int_number; public overridestringToString(){ return “Numero: ” + _number; } }
29. public classBase { public virtualintA(){ return42; } public stringB(){ return “don’t panic”; } } public classDeriv { public overrideintA(){ return100; } }