下面程序的正确输出是( )。 public class Hello { public static void main(String args[]) { int count,xPos=25; for(count=1;count=10;count++) { if(count= =5) Break; system.Out.println(count); xPos+=10: } } }A.1 2 3 4B.1 3 4C.编译错误D.以上都不正确
下面程序的正确输出是( )。 public class Hello { public static void main(String args[]) { int count,xPos=25; for(count=1;count<=10;count++) { if(count= =5) Break; system.Out.println(count); xPos+=10: } } }
A.1 2 3 4
B.1 3 4
C.编译错误
D.以上都不正确
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请阅读下面的程序classTest/{privatestaticStringname;static/{name="World";System.out.print(name);/}publicstaticvoidmain(String[]args)/{System.out.print("Hello");Testtest=newTest();/}/}下列选项中,程序运行结果是()。:A.WorldB.HelloC.World HelloD.Hello World
下列程序的运行结果是【 】。 include class SomeClass { public: SomeClass(int va 下列程序的运行结果是【 】。include <iostream. h>class SomeClass{public:SomeClass(int value) { some_value=value;};void show_data(void) { cout<<data<<"<<~some_value<<endl; };static void set_data(int value) {data=value; }private:static int data;int some_value};int SomeClass::datavoid main(void){SomeClass my_class(1001),your_class(2002);your_class. set_data(4004);my_elass. show_data()}
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()
在下面程序中,括号里应填()。 include using namespace std; class A { public: void 在下面程序中,括号里应填( )。 #include <iostream> using namespace std; class A { public: void fun( ) { cout << "Hello" << endl; } }; class B:: public A { void fun( ) { ( ) //调用基类的函数fun( ) tout << "HI" << endl; } };A.fun()B.A. fun()C.A::fun()D.A-fun(
请写出下面的输出:class B{public:virtual void Print(void){printf(“B::Print\n”);}virtual void Reprint(void){printf(“B:Reprint\n”);}void Algo(void){Print();Reprint();}};class D : public B{public:virtual void Print(void){printf(“D::Print\n”);}};void main(){B *p = new D();p-Print();p-Algo();}
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();? ?}}
main方法是Java应用程序执行的入口点,下面main方法的方法头合法的是()A.public static void main()B.public static void main(String[] args)C.public static void Main(String[] args)D.public static int main(String[] args)