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| #include<iostream> using namespace std;
class Base1 { public: int m_A; protected: int m_B; private: int m_C; }; class son1 :public Base1{ public: void func() { m_A = 10; m_B = 10; } };
class Base2 { public: int m_A; protected: int m_B; private: int m_C; }; class son2 :protected Base2 { public: void func() { m_A = 20; m_B = 20; } };
class Base3 { public: int m_A; protected: int m_B; private: int m_C; }; class son3 :private Base3 { public: void func() { m_A = 30; m_B = 30; } };
class Grandson3 :public son3 { public: void func() { } };
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