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I'd like to have your recommendation about good source for below topics:<br />
<br />
1. virtual base in MI<br />
2. how much VPTRs in object d if:<br />
(smth like this)<br />
<br />
&nbsp; &nbsp; &nbsp; Base<br />
&nbsp; &nbsp; / &nbsp; | &nbsp; \<br />
&nbsp; v/ &nbsp; &nbsp;| &nbsp; &nbsp;\v &nbsp; &nbsp;// v - virtual inheritance<br />
&nbsp; B1 &nbsp; B2 &nbsp; &nbsp;B3<br />
&nbsp; &nbsp;\ &nbsp; &nbsp;| &nbsp; &nbsp;/<br />
&nbsp; &nbsp; \ &nbsp; | &nbsp; /<br />
&nbsp; &nbsp; &nbsp;Derived<br />
&nbsp; &nbsp; &nbsp;<br />
Derived d;<br />
<br />
p.s. context of my question: I'm preparing for test in OOP course, so I want to learn method<br />
<br />
Regards, VR_
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I'd like to have your recommendation about good source for below topics:

1. virtual base in MI
2. how much VPTRs in object d if:
(smth like this)

      Base
    /   |   \
  v/    |    \v    // v - virtual inheritance
  B1   B2    B3
   \    |    /
    \   |   /
     Derived
     
Derived d;

p.s. context of my question: I'm preparing for test in OOP course, so I want to learn method

Regards, VR_

Multiple Inheritance(more little but essential details)

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.