假定有如下程序:include using namespace std;int s =0;class example{ static int n 假定有如下程序: #include <iostream> using namespace std; int s =0; class example{ static int n; public: example(int i){ n=i; } static void add( ){ s+=n; } }; int example::n=0; int main( ){ example a(2),b(5); example::add(); cout<<s<<endl; return 0; }程序运行后输出结果为( )。A.2B.3C.7D.5

假定有如下程序:include using namespace std;int s =0;class example{ static int n

假定有如下程序: #include <iostream> using namespace std; int s =0; class example{ static int n; public: example(int i){ n=i; } static void add( ){ s+=n; } }; int example::n=0; int main( ){ example a(2),b(5); example::add(); cout<<s<<endl; return 0; }程序运行后输出结果为( )。

A.2

B.3

C.7

D.5


相关考题:

有以下程序: include using namespace std; constxntN=5; int fun(char*s,char a,int 有以下程序:include <iostream>using namespace std;const xnt N=5;int fun(char *s,char a,int n){int j;*s=a;j=n;while(a<s[j])j--;return j;}int main(){char s[N+1];int k;

有如下程序:includevoid fun(intx, int y){int t=x; x=y; y=t;}int main(){int 有如下程序: #include<iostream> void fun(intx, int y){int t=x; x=y; y=t;} int main() { int a[2]={23,42}; fun(a[1],a[0]); std::cout<<a[0]<<","<<a[1]<<std::end1; return 0; } 执行后的输出结果是( )。A.42,42B.23,23C.23,42D.42,23

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有以下程序: include using namespace std; int f(int); int main() {int i;for(i=0; 有以下程序:include <iostream>using namespace std;int f(int);int main(){int i;for(i=0;i<5;i++)cout<<f(i)<<" ";return 0;}int f(int i){static int k=1;for(;i>0;i--)k+=i;

以下程序调用findmax()函数返回数组中的最大值。请填空完成此函数。include〈iostream〉using namespace std;int findmax(int*a,int n){int +p、*s;for(p=a,s=a;p-a〈n;p++)if(【 】)*s=*p;return(*S);}int main(){int x[5]={12,21,14,16};cout〈〈findmax(X,5)〈〈end1;return 0;}

有如下程序:include void fun(int x, int y){int t=x;x=y;y=t;}int main (){int 有如下程序: #include <iostream> void fun(int x, int y){int t=x;x=y;y=t;} int main () { int a[2]={23,42}; fun(a[1],a[0]); std::cout<<a[0]<<","<<a[1]<<std::endl; return 0; } 执行后的输出结果是A.42,42B.23,23C.23,42D.42,23

如下程序的输出结果是includevoid fun(int x=y;y=t;}int main(){in 如下程序的输出结果是 #include<iostream> void fun(int & X,inty){intt=x;x=y;y=t;} int main( ){ int a[2]={23,42}; fun(a[1],a[0]); std::cout<<a[0]<<","<<a[1]<<std::endl; return 0; }A.42,42B.23,23C.23,42D.42,23

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;}

调试下列程序,写出输出结果,并解释输出结果 #include <iostream> using namespace std; int main() { void fun(int, int); int a, b; fun(2, a); fun(3, b); cout << "a + b = " << a + b << endl; return 0; } void fun(int m, int n) { n = m + 4; }