Virtual inheritance in C + + (virtual inheritance)

Virtual inheritance is primarily to prevent the base class from repeating inheritance, containing multiple identical base classes, resulting in ambiguity and inheriting with virtual base class (virtual base Class), which enables the derived object to contain only one copy of the base class file.

If you do not use virtual inheritance, the derived class needs to provide a copy of your own sample version,

See also: http://blog.csdn.net/caroline_wendy/article/details/18077235

Code:

/* cppprimer.cpp * * Created on:2014.1.10 * author:spike//*eclipse CDT, gcc 4.8.1*/  #include <iostream> #include <string> class Zooanimal {public:void zooprint (void) { Std::cout << "Zoo animal!" << Std::endl;  
      
}  
}; Class Raccoon:public virtual Zooanimal {public:void raccprint (void) {std::cout << "raccoon!" << Std::endl;  
      
}  
}; Class Bear:public virtual Zooanimal {public:void bearprint (void) {std::cout << "bear!" << std::e Ndl  
      
}  
}; Class Panda:public bear, public Raccoon {public:void pandprint (void) {std::cout << "panda!" << s Td::endl;  
      
}  
};  
void Dance (bear& B) {b.bearprint ();  
} void Rummage (raccoon& R) {r.raccprint ();  
    int main (void) {Panda P;  
    P.zooprint ();  
    Dance (P);  
Rummage (P); }

Output:

Zoo animal!  
bear!  
raccoon!

Author: csdn Blog spike_king

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