有如下程序 public class Sun { public static void main(String args[ ]) { int a=2,b=1,c=2; if(a<B) if(b<0) if(c<0) c=0; else C++; System.out.println(C) ; } } 上述程序的运行结果是( )。A.0B.1C.2D.3
有如下程序 public class Sun { public static void main(String args[ ]) { int a=2,b=1,c=2; if(a<B) if(b<0) if(c<0) c=0; else C++; System.out.println(C) ; } } 上述程序的运行结果是( )。
A.0
B.1
C.2
D.3
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有以下程序:include using namespace std; class Base { public: Base() { K=0; } int 有以下程序:include<iostream>using namespace std;class Base{public:Base(){K=0;}int x;};class Derivedl:virtual public Base{public:Derivedl(){x=10;}};class Derived2:virtua1 public Base
有如下程序: include class x { protected: int a; public:x(){ a=1;} }; class x 有如下程序: #include <iostream.h> class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout<<a; } }; class x2 : virtual public x { public: x2() { a+=2; cout<<a; } }; class y : public xl,public x2 { public: y() { cout<<a<<end1; } }; int main() { y obj; return O; } 该程序运行后的输出结果是( )。A.1B.123C.242D.244
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?
有以下程序:include using namespace std;class Base{public:Base(){}virtual void w 有以下程序: #include <iostream> using namespace std; class Base { public: Base(){} virtual void who() { cout<<"Base Class"<<end1; } ~Base(){} }; class Derivel : public Base { public: void who() { cout<<"Derivel Class"<<end1; } }; class Derive2 : public Base { public: void who () { cout<<"Derive2 Class"<<end1; } }; int main () { Base *p; Derivel obj1; Derive2 obj2; p=obj1; p=obj2; p->who ( ); return 0; } 执行程序后的输出结果是( )。A.Base ClassB.Derivel ClassC.Derive2 ClassD.程序编译时出错
有如下程序:includeusing namespace std;class B{public:Virtual void show(){cout 有如下程序: #include<iostream> using namespace std; class B{ public: Virtual void show(){cout<<“B”;} }; class D:publicB{ public: void show(){cout<<“D”;} }; void funl(B*ptr){ptr->show();} void{un2(Bref){ref.show();} voidA.BBBB.BBDC.DBBD.DBD
如下程序的输出结果是includeusing namespace std;class MyClass{public:MyClass(int 如下程序的输出结果是 #include<iostream> using namespace std; class MyClass{ public: MyClass(int i=0){cout<<1;} MyClass(const MyClass&x)}cout<<2;} }; int main( ){ MyClass objl(1),obj2(2),ohj3(objl); return 0; }A.112B.111C.121D.113
有如下程序:includeusing namespace std;class C1{public:~Cl( ){cout 有如下程序: #include<iostream> using namespace std; class C1{ public: ~Cl( ){cout<<1;} }; class C2:public C1{ public: ~C2( ){cout<<2;} }; int main( ){ C2 cb2; C1*cb1: return 0; } 程序的输出结果是A.121B.21C.211D.12
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();? ?}}
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如下 java程序对应的程序文件名为为 public class DemoProgram2_1 { public static void main(String[] args) { System.out.println("hello world!"); } }A.DemoProgram2_1B.DemoProgram2_1.javaC.DemoProgram.javaD.DemoProgram2_1 .class