有如下程序:includeusing namespace std;class Base{public:virtual void func1(){co 有如下程序: #include<iostream> using namespace std; class Base{ public: virtual void func1(){cout<<"Base 1";} void rune2(){cout<<"Base 2";} }; class Derived:public Base{ public: void func1(){cout<<"Derived 1";} void func2(){cout<<"Derived 2";} }; int main(){ Base *p=new Derived; P->func1(); P->func2(); return 0: } 运行此程序,屏幕上将显示输出______。A.Derived 1 Base 2B.Base 1 Base 2C.Derived 1 Derived 2D.Base 1 Derived 2

有如下程序:includeusing namespace std;class Base{public:virtual void func1(){co

有如下程序: #include<iostream> using namespace std; class Base{ public: virtual void func1(){cout<<"Base 1";} void rune2(){cout<<"Base 2";} }; class Derived:public Base{ public: void func1(){cout<<"Derived 1";} void func2(){cout<<"Derived 2";} }; int main(){ Base *p=new Derived; P->func1(); P->func2(); return 0: } 运行此程序,屏幕上将显示输出______。

A.Derived 1 Base 2

B.Base 1 Base 2

C.Derived 1 Derived 2

D.Base 1 Derived 2


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有如下程序:include using namespace std;class BASE{public:~BASE(){cout 有如下程序: #include <iostream> using namespace std; class BASE{ public: ~BASE(){cout<<"BASE";} }; class DERIVED:public BASE{ public: ~DERIVED(){cout<<"DERIVED";} }; int main(){DERIVED x;return 0;} 执行后的输出结果是A.BASEB.DERIVEDC.BASEDERIVEDD.DERIVEDBASE

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下列程序的运行结果是______。include class Base { public: void f(int x){cout 下列程序的运行结果是______。include<iostream.h>class Base{public:void f(int x){cout<<“Base:”<<x<<endl;});class Derived:public Base{public:void f(char*str){cout<<“Derived:”<<str<<endl;}};void main(void){Base*pd=ne

有如下程序:includeincludeusing namespace std;class BASE{char c;public 有如下程序: #include<iostream>#include<iosream> using namespace std; class BASE{ char c; public; BASE(char n):c(n){} virtual ~ BASE(){cout<<c;} }; class DERIVED; public BASE{ char c; public: DERIVED (char n): BASE (n+1)A.XYB.YXC.XD.Y

有如下程序:include using namespace std;class BASE{public:~BASE() {cout 有如下程序: #include <iostream> using namespace std; class BASE{ public: ~BASE() {cout<<"BASE"; } }; class DERIVED: public BASE { public: ~DERIVED() {cout<;"DERIVED"; } }; int main(){DERIVED x; return 0;} 执行后的输出结果是______ 。A.BASEB.DERIVEDC.BASEDERIVEDD.DERIVEDBASE

有以下程序:includeusing namespace std;class BASE{private: char c;public: BASE(c 有以下程序: #include <iostream> using namespace std; class BASE { private: char c; public: BASE(char n):c(n);{} virtual~BASE() { cout<<c; } }; class DERIVED:public BASE { char c; pA.XYB.YXC.XD.Y

有如下程序:includeusing namespace std;class BASE{public:~BASE(){cout 有如下程序: #include<iostream> using namespace std; class BASE{ public: ~BASE(){cout<<"BASE";} }; class DERIVED:public BASE{ public: ~DERIVED(){cout<<"DERIVED";} }; int main(){DERIVED x;return 0;} 执行后的输出结果是( )。A.BASEB.DERIVEDC.BASEDERIVEDD.DERIVEDBASE

阅读下列说明和C++代码,填写程序中的空(1)~(6),将解答写入答题纸的对应栏内。【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;}