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发布时间:2024-03-28 18:47:52

[单项选择]下面程序的运行结果是( )。
#include<iostream.h>
class base
protected:
int a;
public:
base( )cout<<“0”;

Class base1:virtua1 base
public:
base1( )cout<<“1”;

class base2:virtual base
public:
base2( )cout<<“2”;

Class derived:public base1,public base2
public:
derived( )cout<<“3”;

void main( )

derived obj;
cout<<endl;

A. 0123
B. 3120
C. 0312
D. 3012

更多"下面程序的运行结果是( )。 #include<iostream."的相关试题:

[单项选择]下面程序的运行结果是
  #include<iostream.h>
  class base
  protected:
    int a;
  public:
    base( )cout<<"0";
  ;
  class basel:virtual base
  public:
    basel( )cout<<"1";
  ;
  class base2:virtual base
  public:
    base2( )cout<<"2";
  ;
  class derived:public basel,public base2
  public:
    derived( )cout<<"3";
  ;
  void main( )
  
    derived obj;
    cout<<endl;

A. 0123
B. 3120
C. 0312
D. 3012
[单项选择]下面程序的运行结果是 #include<iostream.h> class base{ protected: int a; public: base( ){cout <<"0";} }; class basel:virtual base{ public: basel ( ) {cout <<"1";} }; class base2:virtual base{ public: base2( ){cout <<"2";} }; class derived:public basel,public base2{ public: derived( ){cout <<"3";} }; void main( ) { derived obj; cout <<end1; }
A. 0123
B. 3120
C. 0312
D. 3012
[单项选择]下面程序的运行结果是( )。
#include<iostream.h>
class base
protected:
int a;
public:
base( )cout<<“0”;

Class base1:virtua1 base
public:
base1( )cout<<“1”;

class base2:virtual base
public:
base2( )cout<<“2”;

Class derived:public base1,public base2
public:
derived( )cout<<“3”;

void main( )

derived obj;
cout<<endl;

A. 0123
B. 3120
C. 0312
D. 3012
[单项选择]下面程序的结果是   #include   class A   {   int a;   public:   A( ):a (1){}   void showa( ){cout<<a;}   };   class B   {   int a;   public:   B( ):a (2){}   void showa( ){cout<<a;}   };   class C:public A, public B   {   int a;   public:   C( ):a (3){}   void showa( ){cout<<a;}   };   void main( )   {   C c;   c.showa( );   }
A. 1
B. 2
C. 3
D. 程序有错误
[单项选择]下面程序的运行结果是( )。   #include<iostream.h>   class base{   protected:     int a;   public:     base( ){cout<<"0";}   };   class basel:virtual base{   public:     basel( ){cout<<"1";}   };   class base2:virtual base{   public:     base2( ){cout<<"2";}   };   class derived:public basel,public base2{   public:     derived( ){cout<<"3";}   };   void main( )   {     derived obj;     cout<<endl;   }
A. 123
B. 3120
C. 312
D. 3012

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