答案及解析：[单选题]已定义类A: class A { ptivate: int x; protected: int y; public: int z; void ShowA( ) { cout << x &l - 计算机网课答案- 答案窝(daanwo.com)-大学生作业答案及考资分享平台

问题：

[单选题]已定义类A: class A { ptivate: int x; protected: int y; public: int z; void ShowA( ) { cout << x << y << z << endl; } }; 通过继承定义派生类B: class B : public A { private: int a; public: void ShowB( ) { cout << x; cout << y; cout << z; cout << a; } }; 函数ShowB( )中错误的语句是( )。
Acout
Bcout
Ccout
Dcout