Virtual Inheritance

Well  we all know why it is Required To resolve Diamond Problem
What if  i have a code like this  where class Bsse has no function and derived twice in Diamond way

Output: in Base In Der1 in Base Der 2 Most Derived

Point is until we access any thing common in base class Explicitly there is NO issue

Lets see Accessing any variable from base : Output : Compilation fails  virtual.cpp: In function `int main()':  virtual.cpp:31: error: request for member `Base_a' is ambiguous  virtual.cpp:6: error: candidates are: int Base::Base_a  virtual.cpp:6: error: int Base::Base_a To solve we need Virtual inheritance .   Output : See the Constructor Sequence
in Base
In Der1
Der 2
Most Derived
Accessing  Base_a 0