有下列程序:
include<iostream>
using namespace std;
class ONE
{
public:
virtual void f(){COUt<<"1";}
};
c1assTWO:public ONE
{
public:
TWO(){cout<<"2";}
};
class THREE:public TWO
{
pub
第1题:
【填空题】运行下列程序,输出结果是____。 #include <iostream> using namespace std; enum opt{ONE,TWO,THREE,FOUR,FIVE,SIX,SEVEN}op; int main(void) { cout<<ONE; cout<<TWO; cout<<SIX; return 0; }
第2题:
第3题:
有以下程序: #include <iostream> using namespace std; class BASE { private: char c; public: BASE(char n):c(n);{} virtual~BASE() { cout<<c; } }; class DERIVED:public BASE { char c; p
A.XY
B.YX
C.X
D.Y
第4题:
有如下程序: #include<iostream>#include<iosream> using namespace std; class BASE{ char c; public; BASE(char n):c(n){} virtual ~ BASE(){cout<<c;} }; class DERIVED; public BASE{ char c; public: DERIVED (char n): BASE (n+1)
A.XY
B.YX
C.X
D.Y
第5题:
下列程序的运行结果是______。
include<iostream.h>
class Base
{
public:
void f(int x){cout<<“Base:”<<x<<endl;}
);
class Derived:public Base
{
public:
void f(char*str){cout<<“Derived:”<<str<<endl;}
};
void main(void)
{
Base*pd=ne
第6题:
下面程序的结果是 #include<iostream.h> class A { public: A( ) {cout<<"construtA"<<endl;} virtual~A( ) {cout<<"destructA"<<endl;}}; class B:public A {}; class C:public A {}; c
A.constructA destructA
B.constructA constructA destructA destructA
C.constructA constructA constructA destructA destructA destructA
D.constructA onstructA constructA constructA destructA destructA destructA destructA
第7题:
下列程序的运行结果是【 】。
include <iostream. h>
class SomeClass
{
public:
SomeClass(int value) { some_value=value;};
void show_data(void) { cout<<data<<"<<~some_value<<endl; };
static void set_data(int value) {data=value; }
private:
static int data;
int some_value
};
int SomeClass::data
void main(void)
{
SomeClass my_class(1001),your_class(2002);
your_class. set_data(4004);
my_elass. show_data()
}
第8题:
下面程序的结果是 #include<iostream.h> class A { public: A(){cout<<"construtA" <<endl;} virtual ~A() {cout << "destructA" <<endl;}}; class B:public A { }; class C:public A { }; class D:public B,public C { }; void main() { Dd;}
A.constructA
B.constructA
C.constmctA
D.constmctA destructA constructA constmctA constructA destructA constructA constructA destructA destructA constructA destructA dest
第9题:
有如下程序: #include<iostream.h> using namespace std; Class Base { public: Base(){cout<<“BB”;f();} void{(){cout<<“BF”;} }; class Derived:public Base { public: Derived(){cout<<“DD”;} void f(){cout<<“Df”;) }; int main
A.BBBfDD
B.BBDfDDDf
C.DD
D.DDBBBf