有如下类定义:class Foo{ public:Foo(int v): value(v) {}// ①~Foo() {} // ②private:Foo() {) // ③int value =0; // ④};其中存在语法错误的行是( )A.①B.②C.③D.④

有如下类定义:

class Foo{ public:Foo(int v): value(v) {}// ①

~Foo() {} // ②

private:Foo() {) // ③

int value =0; // ④};

其中存在语法错误的行是( )

A.①

B.②

C.③

D.④


相关考题:

习惯性在下列程序的输出结果是42,请将画线处缺失的部分补充完整。#includeUsing namespace atd;Class Foo{int value;public:Foo():value(0){}Void setvalue(int value){ ( 10 ) =value; //给Foo 的数据成员value 赋值}void print(){cout};Int main(){Foo f;f.setvalue(42);f.print();retum0;}

有如下类定义:class Foo{public:Foo(int v):value(v){} // ①~Foo(){} // ②private:Foo(){} // ③int value = 0; // ④};其中存在语法错误的行是A . ①B . ②C . ③D . ④

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Given:Which three methods, inserted individually at line 14, will correctly complete class Two?() A.int foo() { /* more code here */ }B.void foo() { /* more code here */ }C.public void foo() { /* more code here */ }D.private void foo() { /* more code here */ }E.protected void foo() { /* more code here */ }

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Given:Which code, inserted at line 15, allows the class Sprite to compile?() A.Foo { public int bar() { return 1; }B.new Foo { public int bar() { return 1; }C.new Foo() { public int bar() { return 1; }D.new class Foo { public int bar() { return 1; }

有如下类定义: classFoo { public:Foo(intv):value(v){}//① ~Foo(){}//② private: Foo(){}//③ intvalue=0;//④ }; 其中存在语法错误的行是( )。A.①B.②C.③D.④

有如下类定义: class Foo { public: Foo(int v) : value(v) { } // ① ~Foo() { } // ② private: Foo() { } // ③ int value = 0; // ④ }; 其中存在语法错误的行是( )。A.①B.②C.⑧D.④

有如下类定义: class Foo { public: Foo(intv):value(v){} //① ~Foo(){} //② private: Foo(){} //③ int value=0; //④ }; 其中存在语法错误的行是( )。A.①B.②C.③D.④

public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?() A、 foofoofoofoofooB、 foobarfoobarbarC、 foobarfoofoofooD、 foobarfoobarfooE、 barbarbarbarbarF、 foofoofoobarbarG、 foofoofoobarfoo

class One {  void foo() {}  }  class Two extends One {   //insert method here  }  Which three methods, inserted individually at line 14, will correctly complete class Two?()A、 int foo() { /* more code here */ }B、 void foo() { /* more code here */ }C、 public void foo() { /* more code here */ }D、 private void foo() { /* more code here */ }E、 protected void foo() { /* more code here */ }

class Foo {  private int x;  publicFoo(intx) {this.x=x; }  public void setX( int x) { this.x = x; }  public int getX() { return x; }  }   public class Gamma {  static Foo fooBar( Foo foo) {  foo = new Foo( 100);  return foo;  }  public static void main( String[] args) {  Foo foo = new Foo( 300);  System.out.print( foo.getX() + “-“);  Foo fooFoo = fooBar( foo);  System.out.print( foo.getX() + “-“);  System.out.print( fooFoo.getX() + “-“);  foo = fooBar( fooFoo);  System.out.print( foo.getX() + “-“);  System.out.prmt( fooFoo.getX());  }  }  What is the output of this program?()A、 300-100-100-100-100B、 300-300-100-100-100C、 300-300-300-100-100D、 300-300-300-300-100

Which code determines the int value foo closest to a double value bar?()  A、 Int foo = (int) Math.max(bar);B、 Int foo = (int) Math.min(bar);C、 Int foo = (int) Math.abs(bar);D、 Int foo = (int) Math.ceil(bar);E、 Int foo = (int) Math.floor(bar);F、 Int foo = (int) Math.round(bar);

class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()A、 public void foo() { }B、 public int foo() { return 3; }C、 public Two foo() { return this; }D、 public One foo() { return this; }E、 public Object foo() { return this; }

public class Delta {  static boolean foo(char c) {  System.out.print(c);  return true;  }  public static void main( String[] argv ) {  int i =0;  for ( foo(‘A’); foo(‘B’)(i2); foo(‘C’)){  i++ ;  foo(‘D’);  }  }  }  What is the result?()  A、 ABDCBDCBB、 ABCDABCDC、 Compilation fails.D、 An exception is thrown at runtime.

public class Test {  public static void main(String args[]) {  class Foo {  public int i = 3; }  Object o = (Object)new Foo();   Foo foo = (Foo)o;  System.out.println(“i = “ + foo.i); }  }  What is the result?()  A、 i = 3B、 Compilation fails.C、 A ClassCastException is thrown at line 6.D、 A ClassCastException is thrown at line 7.

int index = 1;   boolean test = new Boolean;   boolean foo= test [index];  What is the result?()A、 Foo has the value of 0.B、 Foo has the value of null.C、 Foo has the value of true.D、 Foo has the value of false.E、 An exception is thrown.F、 The code will not compile.

1.public class Test {  2.public static void main (String args[]) {  3.class Foo {  4.public int i = 3;  5.}  6.Object o = (Object) new Foo();  7.Foo foo = (Foo)o;  8.System.out.printIn(foo. i); 9. }  10.}   What is the result?()  A、 Compilation will fail.B、 Compilation will succeed and the program will print “3”C、 Compilation will succeed but the program will throw a ClassCastException at line 6.D、 Compilation will succeed but the program will throw a ClassCastException at line 7.

public class Foo {  public int a;  public Foo() { a = 3; }  public void addFive() { a += 5; }  }  and:  public class Bar extends Foo { public int a;  public Bar() { a = 8; }  public void addFive() { this.a +=5; }  }  invoked with:  Foo foo = new Bar();  foo.addFive();  System.out.println(”Value: “+ foo.a);  What is the result?() A、 Value: 3B、 Value: 8C、 Value: 13D、 Compilation fails.E、 The code runs with no output.F、 An exception is thrown at runtime.

Given:   10. class One {   11. void foo() { }   12. }   13. class Two extends One {   14. //insert method here   15. }   Which three methods, inserted individually at line 14, will correctly complete class Two?()A、 public void foo() { /* more code here */ }B、 private void foo() { /* more code here */ }C、 protected void foo() { /* more code here */ }D、 int foo() { /* more code here */ }  E、 void foo() { /* more code here */ }

单选题public class Foo {  public int a;  public Foo() { a = 3; }  public void addFive() { a += 5; }  }  and:  public class Bar extends Foo { public int a;  public Bar() { a = 8; }  public void addFive() { this.a +=5; }  }  invoked with:  Foo foo = new Bar();  foo.addFive();  System.out.println(”Value: “+ foo.a);  What is the result?()A Value: 3B Value: 8C Value: 13D Compilation fails.E The code runs with no output.F An exception is thrown at runtime.

单选题Which code determines the int value foo closest to, but not greater than, a double value bar?()A Int foo = (int) Math.max(bar);B Int foo = (int) Math.min(bar);C Int foo = (int) Math.abs(bar);D Int foo = (int) Math.ceil(bar);E Int foo = (int) Math.floor(bar);F Int foo = (int) Math.round(bar);

单选题public class Test {   public static void main (String args) {   class Foo {   public int i = 3;  }   Object o = (Object) new Foo();   Foo foo = (Foo)o;   System.out.printIn(foo. i);  }   }   What is the result?()A Compilation will fail.B Compilation will succeed and the program will print “3”C Compilation will succeed but the program will throw a ClassCastException at line 6.D Compilation will succeed but the program will throw a ClassCastException at line 7.

单选题10. interface Foo { int bar(); }  11. public class Sprite {  12. public int fubar( Foo foo) { return foo.bar(); }  13. public void testFoo() {  14. fubar(  15. // insert code here  16.);  17. }  18. }  Which code, inserted at line 15, allows the class Sprite to compile?()A Foo { public int bar() { return 1; } }B new Foo { public int bar() { return 1; } }C newFoo() { public int bar(){return 1; } }D new class Foo { public int bar() { return 1; } }

单选题public class Test {  public static void main(String args[]) {  class Foo {  public int i = 3; }  Object o = (Object)new Foo();   Foo foo = (Foo)o;  System.out.println(“i = “ + foo.i); }  }  What is the result?()A i = 3B Compilation fails.C A ClassCastException is thrown at line 6.D A ClassCastException is thrown at line 7.

多选题public class Foo {   private int val;   public foo(int v) (val = v;) }   public static void main (String args) {   Foo a = new Foo (10);   Foo b = new Foo (10);   Foo c = a;   int d = 10;   double e = 10.0;   }   Which three logical expression evaluate to true? ()A(a ==c)B(d ==e)C(b ==d)D(a ==b)E(b ==c)F(d ==10.0)

单选题public class Delta {  static boolean foo(char c) {  System.out.print(c);  return true;  }  public static void main( String[] argv ) {  int i =0;  for ( foo(‘A’); foo(‘B’)(i2); foo(‘C’)){  i++ ;  foo(‘D’);  }  }  }  What is the result?()A ABDCBDCBB ABCDABCDC Compilation fails.D An exception is thrown at runtime.

多选题class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()Apublic void foo() { }Bpublic int foo() { return 3; }Cpublic Two foo() { return this; }Dpublic One foo() { return this; }Epublic Object foo() { return this; }