[单选题]有下列程序: include using namespace std; classTest{ public: Test(){n£«=2;} ~Test有下列程序： #include＜iostream＞ using namespace std; classTest{ public: Test() {n＋＝2;} ～Test() {n-＝3;} static int getNum(){return n;} private: static int n; }; int Test::n＝1； int ma

[单选题]有下列程序: include using namespace std; class Demo { public: Demo(){cout<<"d有下列程序： #include＜iostream.h＞ using namespace std; class Demo { public: Demo(){ cout＜＜"default constmctor/n";} Demo(const Demo &x){ cont＜＜"copy constructor/n";} }; Demo us

[单选题]有下列程序: include using namespace std; class Base { public: Base(){cout<<"B有下列程序： #include＜iosteram.h＞ using namespace std; class Base { public: Base(){cout＜＜"BB"; f(); } void f(){cout＜＜"Bf";} }; class Derived:public Base { public: Derived(){cout＜＜

[单选题]有下列程序: include using namespace std; class Stack { public: Stack(unsigned有下列程序： #include＜iosteram.h＞ using namespace std; class Stack { public: Stack(unsignedn=10):size(n){rep_=new int [size];top=O;} Stack(Stack&s):size(s.size) { rep_=new int[size

[主观题]有以下程序: include using namespace std; class sample {int x; public:void setx(有以下程序：include ＜iostream＞using namespace std;class sample{int x;public:void setx(int i){x=i;}int putx (){return x;}};int main ( ){sample *p;sample A[3];A．[0] .set＞:(5);A．[1] .s

[单选题]有如下程序: include using namespace std; class BASE { public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(){DERIVEDx;retum 0;}

[单选题]有如下程序: include using namespace std; class A { public: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 { B b; public: C(){cout＜＜"C";} }; int main(){Cobj;retum 0

[单选题]有如下程序: include using namespace std; class AA { int n;有如下程序： #include＜iostream＞ using namespace std; class AA { int n; public: AA(int k);n(k){} intget(){return n;} int get()const{return n+1;} }; int main() { AA a(5); const AA b(6); cout＜＜a.get()＜＜b.ge

[单选题]有如下程序: include using namespace std; class Test { public有如下程序： #include＜iostream＞ using namespace std; class Test { public: Test(){n+=2;} ～Test(){n-=3;} static int getNum(){return n;} private: static int n; }; int Tesl::n=1 int main() { Test*p=new Tes

[单选题]有如下程序: include using namespace std; class Base{ int x; pu有如下程序： #include＜iostream＞ using namespace std； class Base{ int x； public： Base(int n＝0):x(n){cout＜＜n;) int getX()const{return x;} }； class Derived:public Base{ int y； public： Derived(int m，int