阅读下列代码后 public class Person{ int arr[]=new int[10]; public static void main(String args[]){ System.out.println (arr[1]); } } 正确的说法是( )。A.编译时将产生错误B.编译时正确,运行时将产生错误C.输出零D.输出空

阅读下列代码后 public class Person{ int arr[]=new int[10]; public static void main(String args[]){ System.out.println (arr[1]); } } 正确的说法是( )。

A.编译时将产生错误

B.编译时正确,运行时将产生错误

C.输出零

D.输出空


相关考题:

写出下列代码的输出内容#includeint inc(int a){return(++a);}int multi(int*a,int*b,int*c){return(*c=*a**b);}typedef int(FUNC1)(int in);typedef int(FUNC2)(int*,int*,int*);void show(FUNC2 fun,int arg1, int*arg2){INCp=inc;int temp =p(arg1);fun(temp,arg1, arg2);printf("%d\n",*arg2);}main(){int a;show(multi,10,a);return 0;}

对于下面程序,对p进行赋值正确的是( )。 class A{ public:fun(int i){cout<<i<<endl;} }; main(){ void(A::*p)(int); }A.p=fun;B.p=fun();C.p=A::fun;D.p=A::fun()

下面程序段中的错误语句是 ______。 class M{ int i; public: void ~AA(int); AA *p; void AA(); void AA(int x){i=x;}; };A.AA *p;B.void ~AA(int);C.void AA(int);D.void AA(int x){i=x;};

Eclipse JDT 代码生成修饰符丢失问题? Iusejdt(Ver=3.6.2.v_A76_R36x,API=JSL3)togenerateamembermethodorfieldIfindtheoutputmethodhasnomodifiers.setModifier(int)is@Deprecated,SoIusesetFlag(int)method.ItriedparameterModifier.PUBLIC,Modifier.ModifierKeyword.PUBLIC_KEYWORD.toFlagValue(),neitherworks.Code:MethodDeclarationmd=ast.newMethodDeclaration();md.setFlags(Modifier.ModifierKeyword.PUBLIC_KEYWORD.toFlagValue());md.setReturnType2(ast.newPrimitiveType(PrimitiveType.VOID));//md.setFlags(Modifier.PUBLIC|Modifier.STATIC);md.setName(ast.newSimpleName("onCreate"));Output:voidonCreate(...Question:Wherepublickeywordgone?howtoaddmodifier?why?oraBug?

对于下面程序,对p调用正确的是( )。 class A{ public:fun(int i){cout<<i<<endl;} }; main(){ A a; int k=0; void(A::*p)(int); p=A::fun; }A.a.p(k);B.*a.p(k)C.a.*p(k)D.a::*p(k)

阅读以下说明和Java程序,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Java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。部分接口、类及其关系如图5-1所示。【Java代码】interface?DrawCircle?{? //绘制圆形 public(1) ;}class?RedCircle?implements?DrawCircle?{? ?//绘制红色圆形???????public?void?drawCircle(int?radius,intx,?int?y)??{????????????System.out.println("Drawing?Circle[red,radius:"?+?radius?+",x:"?+?x?+?",y:"?+y+?"]");???????}}class?GreenCircle?implements?DrawCircle?{????//绘制绿色圆形??????public?void?drawCircle(int?radius,?int?x,int?y)?{???????????System.out.println("Drawing?Circle[green,radius:"?+radius+",x:?"?+x+?",y:?"?+y+?"]");??????}}abstract?class?Shape?{????//形状? protected? ? (2)???;? ? public?Shape(DrawCircle?drawCircle)?{? ?this.drawCircle=?drawCircle;? ? ? public?abstract?void?draw();}class?Circle?extends?Shape?{? //圆形? ?private?int?x,y,radius;? public?Circle(int?x,int?y,intradius,DrawCircle?drawCircle)?{? ?(3)???;? this.x?=?x;? ? ? this.y?=?y;? ?this.radius?=radius;? }? ? ?public?void?draw()?{? ? drawCircle.? ?(4)? ?;? ? ? }}public?class?DrawCircleMain?{? public?static?void?main(String[]?args)?{? Shape?redCircle=new?Circle(?100,100,10,? (5) );//绘制红色圆形? Shape?greenCircle=new?Circle(200,200,10,(6) );//绘制绿色圆形? ?redCircle.draw(); greenCircle.draw();? ?}}

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;}

假定一个10行20列的二维整型数组,下列哪个定义语句是正确的()。A.int[]arr = new int[10,20]B.int[]arr = int new[10,20]C.int[,]arr = new int[10,20]D.int[,]arr = new int[20;10]

假定一个10行20列的二维整型数组,下列哪个定义语句是正确的A.int[]arr = new int[10,20]B.int[]arr = int new[10,20]C.int[,]arr = new int[10,20]D.int[,]arr = new int[20;10]

如下代码中,类 X 的拷贝构造函数的数量是 class X { public: X(); X(int); X(const X, int = 1); ~X(); };