[说明] 下面代码实现class C对class A和B的protected成员和public成员的调用。仔细阅读[代码5-1]、[代码5-2]，在 (n) 处写出正确的运行结果。 [代码5-1] #include ＜iostream.h＞ class A private: int a1; protected: int a2; public: A ( int v1,int v2,int v3 ): a1 ( v1 ) ,a2 ( v2 ) ,a3 ( v3 )
int a3 ; class B : pubiic A private: int b1; protected: int b2; public: B ( int v1,int v2,int v3,int v4,int v5,int v6 ) : A(v1,v2,v3),b1 (v4),b2(v5),b3 (v6) int b3; ; class C : public B private: int c1; protected: int c2; public: int c3; C (int v1,int v2,int v3,int v4,int v5,int v6,int v7,int v8,int v9 ) : B ( v1,v2,v3,v4,v5,v6 ) ,c1 ( v7 ),c2 ( v8 ) ,c3 v9 void disp ( )
cout ＜＜ "a2 in class C =" ＜＜ a2 ＜＜ endl; cout ＜＜ "a3 in class C =" ＜＜ a3 ＜＜ eudl; cout ＜＜ "b2 in class C =" ＜＜ b2 ＜＜ endl; tout ＜＜ "b3 in class C =" ＜＜ b3 ＜＜ endl;