A question about the diamond inheritance

[Tony Johansson]

Hello Experts!!

Assume you have the following diamond inheritance structure.
Assume the following at the top you have the Ancestor class and below this
class
at the same level we have class Child1 and Child2.
Class Descendatnt is derived class Child1 and Child2.
Assume also that in the top class we have one datamember called number and
one method called getNumber(). If you don't use virtual inheritance you will
get compile error.
Assume you get compile error because of not using virtual inheritance.

Now to my question is it corrext to say that in class Descendant you will
get two
subobjects of class Ancestor one from Child1 and the other from Child2.

Or is it more correct to say that the datamember number will appear in the
Descendats twice because of
being inheritaded twice one from class Child1 and the other inheritaded from
class Child2.
The same will happen with the method getNumber you will have two one from
Child1 and one from Child2

//Tony

 

[Josh Mcfarlane]

Assume you have the following diamond inheritance structure.
Assume the following at the top you have the Ancestor class and below this
class
at the same level we have class Child1 and Child2.
Class Descendatnt is derived class Child1 and Child2.
Assume also that in the top class we have one datamember called number and
one method called getNumber(). If you don't use virtual inheritance you will
get compile error.
Assume you get compile error because of not using virtual inheritance.

Now to my question is it corrext to say that in class Descendant you will
get two
subobjects of class Ancestor one from Child1 and the other from Child2.

Depends on where you use the virtual inheritance. If you use it
properly on the definition of Child1 & Child2, you will only have 1
Ancestor subobject.

Judging from the amount of questions you've posted, you may want to
consider switching to another book that is easier to understand.

Josh McFarlane

 

[Jaspreet]

Hello Experts!!
[snip Tony's query]
//Tony

Tony, please go through
http://ozark.hendrix.edu/~burch/csbsju/cs/340/sched/multinherit.html

That might answer your query.

You would like to move to "alt.comp.lang.learn.c-c++" newsgroup. That
will be more suitable for your queries.

 

[Masrur Hossain]

Hello Experts!!

Assume you have the following diamond inheritance structure.
Assume the following at the top you have the Ancestor class and below this
class
at the same level we have class Child1 and Child2.
Class Descendatnt is derived class Child1 and Child2.
Assume also that in the top class we have one datamember called number and
one method called getNumber(). If you don't use virtual inheritance you will
get compile error.
Assume you get compile error because of not using virtual inheritance.

Now to my question is it corrext to say that in class Descendant you will
get two
subobjects of class Ancestor one from Child1 and the other from Child2.

Or is it more correct to say that the datamember number will appear in the
Descendats twice because of
being inheritaded twice one from class Child1 and the other inheritaded from
class Child2.
The same will happen with the method getNumber you will have two one from
Child1 and one from Child2

//Tony