I'm still studying the Tutorial and think this is a failure:
If it is .... everything is clear....
If it's not ... help me!!!
Tutorial Page 102:
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class derived_class_name: public base_class_name
{ /*...*/ };
This access specifier describes the MINIMUM access level for the members that are inherited from the base class. --> should be MAXIMUM!?
Tutorial Page 104: class daughter: protected mother;
104: keyword after the colon (:) denotes the MAXIMUM access level for all the members inherited from the class that follows it (in this case CPolygon).