#include
using namespace std;
class Book{
public:
Book(char*t=””){strcpy(title,t);}
private:
char title[40];
};
class Novel:public Book{
public:
Novel(char *t=””):Book(t){}
char*Category()const{return”文学”;)
};
int main(){
Book *pb;
pb=new Novel();
cout$amp; return 0;
}
若程序运行时输出结果是“文学”,则划线处缺失的语句是
A. char*Category();
B. char*Category()const;
C. virtual char*Category()const;
D. virtual char*Category()const=0;