What will be written to the standard output when the following program is run?()   class Base {  int i;  Base() {   add(1);   }   void add(int v) {  i += v;  }   void print() {  System.out.println(i);  }   }   class Extension extends Base {  Extension() {  add(2);  }   void add(int v) {  i += v*2;  }  }   public class Qd073 {   public static void main(String args[]) {  bogo(new Extension());  }   static void bogo(Base b) {  b.add(8);  b.print();   }   }  A、9B、18C、20D、21E、22

What will be written to the standard output when the following program is run?()   class Base {  int i;  Base() {   add(1);   }   void add(int v) {  i += v;  }   void print() {  System.out.println(i);  }   }   class Extension extends Base {  Extension() {  add(2);  }   void add(int v) {  i += v*2;  }  }   public class Qd073 {   public static void main(String args[]) {  bogo(new Extension());  }   static void bogo(Base b) {  b.add(8);  b.print();   }   }  

  • A、9
  • B、18
  • C、20
  • D、21
  • E、22

相关考题:

下列程序的输出结果是非曲直【 】。includeclass base{ int x, y;public: base(int i, 下列程序的输出结果是非曲直【 】。include<iostream, h>class base{int x, y;public:base(int i, int j){x=i; y=j;}virtual int add(){return x+ y;}};class three: public base{int z;public:three(int i, int j, int k) :base(i, j){z=k; }int add() { return (base:: add()+z); }};void main(){three * q=new three(lO,20,30);cout<<q->add()<<end1;}

下列类的定义中,有( ) 处语法错误。 class Base { public: Base(){} Base(int i) { data=i; } private: int data; }; class Derive: public Base { public: Derive(): Base(O) { } Derive(int x) { d=x; } void setvalue(int i) { data=i; } private: d; };A.1B.2C.3D.4

为完成下面的程序,应在划线处填入的语句是includeusingnamespace std;class Base{pri 为完成下面的程序,应在划线处填入的语句是 #include<iostream> using namespace std; class Base { private: int x; public: Base (int i) { x=i; } ~Base(){} }; class Derived:public Base { public: ______________//完成类Derive构造函数的定义 }; int main() { Derived Obj; return 0; }A.Derived(int i):Base(i){}B.Derived(){}C.void Derived (int i):Base(i){}D.Derived(int i){Base(i);}

有如下程序:includeusing namespace std;class Base{public:void output( ){cout 有如下程序: #include<iostream> using namespace std; class Base{ public: void output( ){cout<<l;} virtual void Print( ){cout<<'B';} }; class Derived:public Base{ public: void output( ){cout<<1;} void Print( ){cout<<'D';} }; int main( ){ Base*prt=new Derived; prt->output( ); prt->Print( ); delete prt; return 0; } 程序的输出结果是A.1BB.1DC.2BD.2D

有以下程序inclube class ClassOne{public: ClassOne(int v=O) { i=v;cout 有以下程序 #inclube <iostream.h> class ClassOne { public: ClassOne(int v=O) { i=v;cout<<i;} void print(){ cout<<i<<end1;} }; class ClassTwo { public: ClassTwo(int v=O) { i=v;cout<<i;} void print(){ cout<<i<<end1;} private: ClassOne myObj; int i; }; void main() { ClassTwo obj(1); obj.print(); }A.11B.111C.110D.101

下面程序段的输出结果是 class Base { int i; Base() { add(1); } void add(int v) { i+=v; } void print() { System.out.println(i); } } class Extension extends Base { Extension() { add(2); } void add(int v) { i+=v*2; } } public class Test { public static void main(String args[]) { bogo(new Extension()); } static void bogo(Baseb){ b.add(8); b.print(); } }A.9B.18C.20D.22

有以下程序 include using namespace std; class Base { int a; public: Base(int x) 有以下程序include <iostream>using namespace std;class Base{int a;public:Base(int x){ a=x; }void show(){ cout<<a; }class Derived : public Base{int b;public:Derived(int i) :Base(i+1),b(i){}void show() { cout<<b;};int main (){Base b(5),*pb;Derived d(1);pb=d;pb->show ();return 0;}运行后的打印结果是______。

如下程序是为变量i赋值。若程序的输出结果是180。请将程序补充完整。注意:不改动程序结构,不得增行或删行。class Base{int i;Base(){add(10);}void add(int v){i+=v;}void print(){System.out.println(i);}}class Extension extends Base{Extension(){add(______);}void add(int v){i+=v*2;}}public class ConstructTest3{public static void main(String args[]){bogo(new Extension());}static void bogo(Base b){b.add(60);b.print();}}

有如下程序: include using namespace std class Base{ int b; public: Base(int i) { 有如下程序:include<iostream>using namespace stdclass Base{int b;public:Base(int i) {b=i;}Void disp ( ) {cout<<"Base:b="<<b<<''; }};class Base1:virtual public Base{public:Base1(int i):Base(i){}};class Base2:virtual public Base{public:Base2(int i):Base(i){}};class Derived:public Basepublic Base1{int d;public:Derived(int i ,int j):Base1(j),Base2(j),【 】{ d=i; }void disp() {cout<<"Derived:d="<<d<<' ';}};int main()Derived objD(1,2);objD. disp()objD. Base::disp();objD. Base1::disp()objD. Base2::disp();return 0;}请将程序补充完整,使程序在运行时输出:Derivd:d=1 Base:b=2 Base:b=2 Base:b=2

有如下程序;include using namespace std;class Base{public;Base(inti){x=i;}void d 有如下程序; #include <iostream> using namespace std; class Base { public; Base(inti){x=i;} void dispa0{cout<<x<<',';} private; int x; }; class Derived;public Base { public; Derived(int i);Base(i+10) {x=i;) void dispb(){dispa();cout<<x<<end1;} private; int x; }; int main() { Derived b(2) ; b.dispb(); return 0; } 运行的结果是( )。A.2,2B.12,2C.12,10D.10,2

下面程序的打印结果是【】。 include using namespace std; class Base { public:Base(i 下面程序的打印结果是【 】。include <iostream>using namespace std;class Base{public:Base(int x){a=x;}void show(){cout<<a;}private:int a;};class Derived : public Base{public:Derived(int i) :Base(i+1) ,b(i) { }void show(){cout<<b;}private:int b;};int main ( ){Base b(5) , *pb;Derived d(1);pb=d;pb->show();return 0;}

下面程序段的输出结果是( )。 class Base { int i; Base { add(1); } void add(int v) { i+=v: } void print { System.out.println(i); } } class Extension extends Base { Extension { add(2); } void add(int v) { i+=v*2: } } public class Test { public static void main(String args[]) { bogo(new Extension); } static void bogo(Base b) { add(8); print; } }A.9B.18C.20D.22

下面程序段的输出结果是 class Base { int i; Base() { add(1); } void add(int v) { i+=v; } void print() { System.out.println(i); } } class Extension extends Base { Extension() { add(2); } void add(int v) { i+=*2; } } public class Test { public static void main(String args[]) { bogo(new Extension()); } static void bogo(Base b) { b.add(8); b.print(); } }A.9B.18C.20D.22

下面程序段的输出结果是( )。 classBase { inti; Base() { add(1); } voidadd(intV) { i+=v; } Voidphnt() { System.out.println(i); } } Class EXtenSiOneXtendSBaSe { ExtensiOn() { add(2); } voidadd(int v) { i+=v*2; } } public class TeSst { publicstatic voidmain(String argS[]) { bogo(new Extension()); } Static voidbogo(Base B) { b.add(8); b.phnt(); } }A.9B.18C.20D.22

下列类的定义中,有( )处语法错误。 class Base { public: Base(){} Base(int i) { data=i; } private: int data; }; class Derive : public Base { public: Derive() : Base(O) {} Derive (int x) { d=x; } void setvalue(int i) { data=i; } private: int d; };A.1B.2C.3D.4

当你编译运行下列程序代码,会得到什么结果?private class Base{ Base(){ int i = 100; System.out.println(i); } }public class Pri extends Base{ staticint i = 200;public static void main(String argv[]){ Pri p = new Pri(); System.out.println(i); } }A.这段代码不能通过编译B.输出200C.输出100和200D.输出100

有以下程序:inClUdeusingnamespacestd;ClassBase{public: Base(intx) {a=x; } voidsh 有以下程序: #inClUde <iostream> using namespace std; Class Base { public: Base(int x) { a=x; } void show() { cout<<a; } private: int a; }; class Derived : public Base { public: Derived(int i) :Base(i+1),b(i){} void Show() { cout<<b; } private: int b; }; int main() { Base b(5),*pb; Derived d(1); pb=d; pb->show(); return 0; } 运行后的输出结果是( )。A.1B.5C.2D.0

下列程序的运行结果是______。 include class Base { public: virtual void func(int 下列程序的运行结果是______。include<iostream.h>class Base{public:virtual void func(int i){cout<<"class Base:"<<i<<end1;)};class Derived: public Base{public:void func(double d){cout<<"class Derived:"<<d<<endl;}};void main( ){Base a,*p=a;Derived b;p=b;(*p).func(3.3);}

设有类定义如下:class Base{public Base(int i){}}public class MyOver extends Base{public static void main(String arg[]){MyOver m = new MyOver(10);}MyOver(int i){super(i);}MyOver(String s, int i){this(i);//Here}}以下哪条语句可以安排在//Here处 ?A.MyOver m = new MyOver();B.super();C.this("Hello",10);D.Base b = new Base(10);

以下程序调试结果为:class Base{Base(){int i = 100;System.out.print (i);}}public class Pri extends Base{static int i = 200;public static void main(String argv[]){Pri p = new Pri();System.out.print(i);}} A.编译错误B.200C.100200D.100

下列程序的输出结果是______。 include class base { int x,y; public: base(int i,i 下列程序的输出结果是______。include<iostream.h>class base{int x,y;public:base(int i,int j){x=i;y=j;}virtual int add( ){return x+y;}};class three:public base{int z;public:three(int i,int j,int k):base(i,j){z=k;)int add( ){return(base::add( )+z);}};void main( ){three*q=new three(10,20,30);cout<<q->add( )<<endl;}

What will be the result of attempting to compile and run the following code?()   public class Q6b0c {   public static void main(String args[]) {  int i = 4;  float f = 4.3;   double d = 1.8;   int c = 0;   if (i == f) c++;   if (((int) (f + d)) == ((int) f + (int) d))  c += 2;   System.out.println(c);   }   }  A、The code will fail to compile.B、0 will be written to the standard output.C、1 will be written to the standard output.D、2 will be written to the standard output.E、3 will be written to the standard output.

What will be written to the standard output when the following program is run?()   public class Q8499 {   public static void main(String args[]) {  double d = -2.9;   int i = (int) d;  i *= (int) Math.ceil(d);  i *= (int) Math.abs(d);   System.out.println(i);   }   }A、12B、18C、8D、9E、27

What will be the result of attempting to compile and run the following program?()   public class Q28fd {   public static void main(String args[]) {   int counter = 0;   l1:   for (int i=10; i0; i--) {   l2:  int j = 0;   while (j  10) {   if (j  i) break l2;   if (i == j) {   counter++;   continue l1;   }   }   counter--;   }   System.out.println(counter);  }   }   A、The program will fail to compile.B、The program will not terminate normally.C、The program will write 10 to the standard output.D、The program will write 0 to the standard output.E、The program will write 9 to the standard output.

Given the following code, write a line of code that, when inserted at the indicated location, will make the overriding method in Extension invoke the overridden method in class Base on the current object.   class Base {   public void print( ) {   System.out.println("base");   }   }   class Extention extends Base {   public void print( ) {   System.out.println("extension");   // insert line of implementation here   }   }   public class Q294d {   public static void main(String args[]) {   Extention ext = new Extention( );   ext.print( );   }   }   Fill in a single line of implementation.()

单选题What will be the result of attempting to compile and run the following code?()   public class Q6b0c {   public static void main(String args[]) {  int i = 4;  float f = 4.3;   double d = 1.8;   int c = 0;   if (i == f) c++;   if (((int) (f + d)) == ((int) f + (int) d))  c += 2;   System.out.println(c);   }   }AThe code will fail to compile.B0 will be written to the standard output.C1 will be written to the standard output.D2 will be written to the standard output.E3 will be written to the standard output.

单选题What will be the result of attempting to compile and run the following program?()   public class Q28fd {   public static void main(String args[]) {   int counter = 0;   l1:   for (int i=10; i i) break l2;   if (i == j) {   counter++;   continue l1;   }   }   counter--;   }   System.out.println(counter);  }   }AThe program will fail to compile.BThe program will not terminate normally.CThe program will write 10 to the standard output.DThe program will write 0 to the standard output.EThe program will write 9 to the standard output.