有如下程序:nclude using namespace std;class Base{public:void fun1() {cout << "B

有如下程序:#nclude ＜iostream＞using namespace std;class Base{ public:void fun1() {cout ＜＜ "Base/n"; }virtual void fun2() {cout ＜＜ "Base/n"; }};class Derived: public Base{ public:void fun1() {cout ＜＜ "Derived/n"; }void fun2() {cout ＜＜ "Derived/n"; }} void f(Base& b) { B. fun1(); B. fun2(); }int main(){Derived obj;f(obj);return 0;}

A．Base Base

B．Base Derived

C．Derived Base

D．Derived Derived

[单选题]有如下程序: nclude using namespace std; class Stack{有如下程序： #nclude＜iostremn＞ using namespace std; class Stack{ public: Stack(unsigned n=10:size(n){rep_=new int[size];top=O;} Stack(Stack&s):size(s.size) { rep_=new int[size]; for(int i=0;i＜size;i++)rep_

[单选题]有如下程序: nclude using namespace Std; Class MyClass{ public:有如下程序： #nclude＜iostream＞ using namespace Std； Class MyClass{ public： MyClass(int i=0){cout＜＜1;} MyClass(constMyClass&x){cout＜＜2；} MyClass& perator=(const MyClass&x){cout＜＜3；return*t

[单选题]有如下程序:include using namespace std;class BASE{public:~BASE(){cout<<"BASE";}有如下程序： #include ＜iostream＞ using namespace std; class BASE{ public: ～BASE(){cout＜＜"BASE";} }; class DERIVED:public BASE{ public: ～DERIVED(){cout＜＜"DERIVED";} }; int main(

[单选题]有如下程序:include using namespace std;class Base{public:Base(){ cout<<"BB";有如下程序： #include ＜iostream.h＞ using namespace std; class Base { public: Base(){ cout＜＜"BB"; f(); } voidf(){cout ＜＜"Bf"; } }; class Derived: public Base { public: Derived (){c

[单选题]有如下程序:include using namespace std;class point{intx,y;public:point( int vx,有如下程序：#include ＜iostream＞using namespace std;class point{ int x, y;public: point( int vx, int vy ) { x = vx; y = vy; } point ( ) x = 0; y= 0; } point operator+( point p1 ) { po

[单选题]有如下程序;include using namespace std;class Base{public;Base(inti){x=i;}void d有如下程序; #include ＜iostream＞ using namespace std; class Base { public; Base(inti){x=i;} void dispa0{cout＜＜x＜＜',';} private; int x; }; class Derived;public Base { public; Derive

[单选题]有如下程序:include using namespace std;class A {public: A() {cout<<"A";}};class有如下程序: #include ＜iostream＞ using namespace std; class A { public: A() {cout＜＜"A";} }; class B {public:B() {cout＜＜"B";}}; class C: public A { Bb; public: C() {cout＜＜"C";

[单选题]有如下程序:include using namespace std;class Stack {public: Stack(unsigned n= 1有如下程序: #include ＜iostream＞ using namespace std; class Stack { public: Stack(unsigned n= 10):size(n) {rep_=ew int[size]; top=0;} Stack(Stack& s):size(s.size) { rep_=new int[

[单选题]有如下程序:include using namespace std;class x{protected: int a;public: x() { a有如下程序: #include ＜iostream＞ using namespace std; class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout＜＜a; } };A．1B．123C．24

[单选题]有如下程序:include using namespace std;Class x{protected: int a;public: x() {a=有如下程序： #include ＜iostream＞ using namespace std; Class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout＜＜A．1B．123C．242D．244