下列程序中的循环体将会被执行( )。 public class Test { public static void main ( String[ ] args) { int i=3; do { System. out. println ( "Java."); i--; } while ( i ＞＝ 0 ); } }A．1次B．2次C．3次D．4次
下列程序中的循环体将会被执行( )。 public class Test { public static void main ( String[ ] args) { int i=3; do { System. out. println ( "Java."); i--; } while ( i ＞＝ 0 ); } }
A．1次
B．2次
C．3次
D．4次
相关考题：
使用VC6打开考生文件夹下的工程test17_1，此工程包含一个源程序文件test17_1．唧，但该程序运行有问题，请改正程序中的错误，使程序的输出结果如下：Vehicle messageCar messageVehicle message源程序文件test17_1.cpp 清单如下:include ＜iostream.h＞class vehicle{int wheels;float weight;public:/***************** found *****************/void message(void){ cout＜＜"Vehicle message\n";}};class car:public vehicle{int passenger_load;public:/***************** found *****************/void message (void){cout＞＞"Car message\n";}};class truck:public vehicle{int passenger_load;float payload;public:int passengers(void){return passenger_load;}};void main(){vehicle * unicycle;unicycle=new vehicle;/***************** found *****************/unicycle.message()delete unicycle;unicycle=new car;unicycle-＞message();delete unicycle;unicycle=new truck;unicycle-＞message();delete unicycle;}
下列程序的运行结果是【 】。 include class test { private: int num; public: tes 下列程序的运行结果是【 】。include ＜iostream. h＞class test{private:int num;public:test()int TEST() {return num+100;}～test()};test::test(){num=0;}test::～test(){cout＜＜"Destructor is active"＜＜endl;}void main(){test x[3]cout＜＜x[1]. TEST()＜＜endl;}
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()}
下列程序的运行结果是______。 include class test { private: int hum; public: tes 下列程序的运行结果是______。include＜iostream.h＞class test{private:int hum;public:test( );int TEST( ){return num+100;)～test( );};test::test( ){num=0;)test::～test( ){cout＜＜"Destructor is active"＜＜endl;)void main( ){test x[3];cout＜＜x[1].TEST( )＜＜endl;}
有下列程序: include using namespace std; classTest{ public: Test(){n＋=2;} ~Test 有下列程序： #include＜iostream＞ using namespace std; classTest{ public: Test() {n＋＝2;} ～Test() {n-＝3;} static int getNum(){return n;} private: static int n; }; int Test::n＝1； int main() { Test*p＝new TestA．n=0B．n=lC．n=2D．n=3
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;}
以下叙述正确的是（）。A．main方法必须是public方法B．构造方法必须是public方法C．Java应用程序的文件名可以是任意的D．构造方法应该声明为void类型