c++ - Assign static variable to non-static variable -


consider base class class , baseb class derived. baseb derived c class. clases inherit non-static variable “y” in case of baseb , c class “y” have same value. resolved situation following code:

class base {     protected:         int y;     virtual void registervalue()         {         y = 5;         }  };  class : public base { };  class baseb : public base {     protected:     static int x;         virtual void registervalue()         {           // process x ...           y = x;         }  };  class c : public baseb {  };  int baseb::x = 3;  int main() {}

it works right assign static variable non-static variable case?

it's fine language legality perspective, it's little odd.

presumably can't make base::y static since interfere behaviour of class a?

you need aware of fact instances of baseb share same x, have different values of y. intended behaviour?

personally i'd consider making void registervalue() pure virtual function in base class, , expect derived classes implement method including necessary storage implementation. perhaps necessitates base class function virtual int getregistedvalue() = 0 too?


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