📄 using1.c
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class D2;class B {private: int a; // ERROR - B::a is privateprotected: int b; friend class D2;};class D : public B { // ERROR - within this contextpublic: using B::a; using B::b;};class D2 : public B { // ERROR - conflicting access specificationspublic: using B::a; using B::b;private: using B::b; };
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