更多"下列程序的运行结果是______。 #include<iostrea"的相关试题:
[填空题]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);
[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]下列程序的运行结果是
#inClUde<iostream.h>
class Location
private:
int X,Y;
pubhc:
void init(int=0,int=0) ;
void valueX(int val) X=val;
int valueX( ) retum X;
void valueY(int val) Y=val;
int valueY( ) retum Y;;
void Location: :init(int initX,int initY)
X=initX;
Y=initY;
Void main( )
Location A,B;
A. init( ) ;
A. valueX(5) ;
cout < < A. valueX( ) < < endl < < A. valueY( ) < < endl;
B. init(6,2) ;
B. valueY(4) ;
cout < < B. valueX( ) < < endl < < B. valueY( ) < < endl;
A. 5
B. 0
C. 5
D. 0
[单项选择]下列程序的运行结果是
#include <iostream.h>
class Location
private:
int X,Y;
public:
void init(int=0,in=0);
Void valueX(int val) X=val;
int valueX( ) return X;
void valueY(int val) Y=val;
int valueY( ) return Y; ;
void Location::init(int initX,int initY)
X=initX;
Y=initY;
void main( )
Location A,B;
A.init( );
A.valueX(5);
cout < < A.valueX( ) < < end1 < < A.valueY( ) < < end1;
B.init(6,2);
B.valeY(4);
cout < < B.valueX( ) < < end1 < < B.valueY( ) < < end1;
A. 5
B. 0
C. 5
D. 0
[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:
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 < < end1;
A. 0123
B. 3120
C. 0312
D. 3012
[单项选择]分析下面程序,该程序的运行结果是( )。
#include<iostream.h>
class TestClass
public;
static int m;
TestClass ( )
m++;
TestClass(int n)
m=n;
static void test( )
m++;
;
int TestClass::m=0;
void main( )
TestClass A;
TestClass B(3);
A.test( );
TestClass::test( );
tout<<"m="<<B.m<<end1;
A. m=3
B. m=4
C. m=5
D. m=6
[单项选择]下列程序的运行结果是
#include<iostream.h>
class A
int a;
public:
A. A(int aa)
B. a=aa;
C. cout < < a++;
D. voidmain( )
E. Ax,y(2) ,z(3) ;
F. cout< < endl;A) 00
G. B)23
H. C)34
I. D)25
[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: 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 < < 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 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. 5
B. 3
C. 2
D. 0