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有以下程序:include using namespace std;int s=0;class sample{ static int n;publi

有以下程序: #include <iostream> using namespace std; int s=0; class sample { static int n; public: sample (int i) { n=i; } static void add() { s+=n; } }; int sample::n=0;

A.2

B.5

C.7

D.3


参考答案

更多 “ 有以下程序:include using namespace std;int s=0;class sample{ static int n;publi 有以下程序: #include <iostream> using namespace std; int s=0; class sample { static int n; public: sample (int i) { n=i; } static void add() { s+=n; } }; int sample::n=0;A.2B.5C.7D.3 ” 相关考题
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考题 有以下程序:include using namespace std;class sample{private:int n;public:sample 有以下程序: #include <iostream> using namespace std; class sample { private: int n; public: sample(){} sample(int m) { n=m; } void addvalue(int m) { sample s; s.n=n+m; *this=s; } void disp () { cout<<"n="<<n<<endl; } }; int main() { sample s (10); s.addvalue(5); s.disp(); return 0; } 程序运行后的输出结果是A.n=10B.n=5C.n=15D.n=20

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考题 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;}