下面程序的运行结果为( )。 #include(iostream.h) Class A { public:A(){cout<<“1”;} ~A(){cout<<“2”;} }; Class B:public:A { public: B(){cout<<“3”;) ~B(){cout<<“4”;} }; Void main() { B b; }
A.1234
B.1324
C.1342
D.3142
第1题:
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.123
B.3120
C.312
D.3012
第2题:
下面程序的运行结果为 #include<iostream,h> class A { public: A(){cout<<"1";} ~A(){cout<<"2";} }; Class B:public A { public: B(){cout<<"3";} ~B(){cout<<"4";} }; void main() { B b; }
A.1234
B.1324
C.1342
D.3142
第3题:
下面程序的运行结果为 #include<iostream.h> class A { public: A( ){cout<<"1";} ~A( ){cout<<"2";} }; class B:public A { public: B( ){cout<"3";} ~B( ){cout<<"4";} }; void main( ) { B
A.1234
B.1324
C.1342
D.3142
第4题:
下面程序的结果是 #include<iostream.h> class A { int a; public: A( ):a(1){} void showa( ){cout<<a;} }; class B { int a; public: B( ) :a(2) {}
A.1
B.2
C.3
D.程序有错误
第5题:
下面程序的运行结果为
#include<iostream. h>
class A
{
public:
A( ) {cout < <"1";}
~A( ) {cout < <"2";}
};
class B:public A
{
public:
B( ) {cout < <"3";}
~B( ) {cout < <"4";}
};
void main( )
{
B b;
}
A.1234
B.1324
C.1342
D.3142
第6题:
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:
A.123
B.3120
C.312
D.3012
第7题:
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”;)
A.0123
B.3120
C.0312
D.3012
第8题:
下面程序的运行结果是
#include<iostream.h>
class base{
protected:
int a;
public:
base( ) {cout < < "0";}
};
class base l: virtual base{
public:
base l ( ) {cout < <"1";}
};
class base 2: virtual base{
public:
base2 ( ) {cout < <"2";}
};
class derived: public base 1, public base2{
public:
derived( ) {cout < < "3";}
};
void main( )
{
derive obj;
cout < < endl;
}
A.0123
B.3120
C.0312
D.3012
第9题:
下面程序的运行结果为
#include<iostream.h>
Class A
static int n;
public:
A( ) {n=1;}
A(int num) {n=num;}
void print( ) {cout < < n;}
};
int A: :n=2;
void main( )
{
A a,b(3) ;
a. print( ) ;
b. print( ) ;
cout < < endl;
}
A.11
B.13
C.23
D.33