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有如下程序: inClude using namespace std; class AA { public: viltual void f() { c
有如下程序:
inClude<iostream>
using namespace std;
class AA
{
public:
viltual void f()
{
cout<<"AA";
}
};
class BB:public AA
{
public:
BB()
{
cout<<"BB";
}
};
class CC:public BB
{
public:
virtual void f()
{
BB::f();
cout<<"CC";
}
};
int main()
{
AA aa,*p;BB bb;CC cc;
p=&cc;
p->f();
return 0;
}
运行后的输出结果【 】。
参考答案
更多 “ 有如下程序: inClude using namespace std; class AA { public: viltual void f() { c 有如下程序:inClude<iostream>using namespace std;class AA{public:viltual void f(){cout<<"AA";}};class BB:public AA{public:BB(){cout<<"BB";}};class CC:public BB{public:virtual void f(){BB::f();cout<<"CC";}};int main(){AA aa,*p;BB bb;CC cc;p=cc;p->f();return 0;}运行后的输出结果【 】。 ” 相关考题
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【说明】
以下C++代码实现一个简单绘图工具,绘制不同形状以及不同颜色的图形。部分类及其关系如图6-1所示。
【C++代码】
#include?#include?using?namespace?std;class?DrawCircle?{??????//绘制圆形,抽象类? ? ? public: (1);//定义参数为?int?radius,?int?x,?inty? ?virtual~DrawCircle()?{?}};class?RedCircle:public?DrawCircle?{????//绘制红色圆形? ? ? ? public: void?drawCircle(intradius,?int?x,?int?y)?{cout??drawCircle?=?drawCircle;? }? ?virtual~shape()?{?}? public:? ?virtual?void?draw()?=?0;};class?Circle:public?Shape?{????//圆形? ? private:? ? ?int?x,y,radius;? ? public:? Circle(int?x,inty,int?radius,DrawCircle?*drawCircle)? (3)? {? this->x?=?x;? ?this->y?=?y;? ? this->radius?=?radius; }? ? ? public:? void?draw(){? drawCircle?-> (4); }};int?main(){Shape?*redCirclenew?Circle(100,100,10,????(5)????);//绘制红色圆形? Shape?*greenCircle=new?Circle(100,100,10, (6)??);//绘制绿色圆形redCircle >draw();? ?greenCircle?->draw();? ?return?0;}
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