#pragma once

class A{
   public:
      friend class B;
      friend int DataFromA(A a);

      void SpillMyData(void) const;
   protected:
      int protData {400};
   private:
      int privData {100};
   public:
      int pubData{200};
   private:
      int secondPrivate{300};
   public :
      void Increment(void);
};