有如下程序: #includeiostream using namespace std; class AA{ int k; protected: int n; void setK(int k){this一k=k;} public: void setN(int n){this一n=n;} }; class BB:public AA{/*类体略*/}; int main } BB X; A n=1;//1 B setN(2);//2 C k=3;//3 D setK(4);//4 return 0; } 在标注号码的四条语句中正确的是( )。A.1B.2C.3D.4

有如下程序: #include<iostream> using namespace std; class AA{ int k; protected: int n; void setK(int k){this一>k=k;} public: void setN(int n){this一>n=n;} }; class BB:public AA{/*类体略*/}; int main } BB X; A n=1;//1 B setN(2);//2 C k=3;//3 D setK(4);//4 return 0; } 在标注号码的四条语句中正确的是( )。

A.1

B.2

C.3

D.4


相关考题:

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有如下程序:include using namespace std;class shapes{protected: int x, y;public: 有如下程序: #include <iostream> using namespace std; class shapes { protected: int x, y; public: void setvalue(int d, int w=O) { x=d; y=w; } virtual void disp()=O; }; class square : public shapes { public: void disp () { cout<<x*y<<end1; } }; int main ( ) { shapes *ptr; square s1; ptr=s1; ptr->setvalue (10, 5) ;ptr->disp(); return 0; } 执行上面的程序将输出( )。A.50B.5C.10D.15