Are these valid rules in C++ ?

[chetanamale]

How many rules below are valid in C++

Use of pointers:

1) base-class pointer to base-class object is ok

2) derived-class pointer to derived-class object is ok
3) base-class pointer to derived-class object is ok, but only for reference to base-class members
==>Is this rule valid for virtual functions ?? As per my knowledge we can invoke
derived class virtual function with base class object pointer pointed to derived
class object memory address.


4) derived-class pointer to base-class object is not allowed without explicit cast


thanks,
chetan.

[sicarie]

chetanamale-

Have you tried creating examples of these on your own? Have you tried researching related material to figure this out? What did you look at? What have you tried?

[chetanamale]

Hi :

I tried examples of these and got more confused.....like i pointed out for rule number three, i seen contradictions what is mentioned there and what is true about virtual functions, I'm really confused.One liner responses to my questions
will also do....

thanks.

[sicarie]

Okay, so what did you try? Where did you get confused with it?