下面程序输出的结果为( )。 #inClUde”iostream.h” Class A {public: A(){cout<<“CLASS A”<<endl;} ~A()<)}; class B:public A {public: B(){cout<<”CLASSB”<<endl;} ~B(){}}; void main() {A*p; p=new B; B *q; q=new B;}A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A ClASS BD.CLASS A CLASS B CLASS A CLASS B CLASS B CLASS B

下面程序输出的结果为( )。 #inClUde”iostream.h” Class A {public: A(){cout<<“CLASS A”<<endl;} ~A()<)}; class B:public A {public: B(){cout<<”CLASSB”<<endl;} ~B(){}}; void main() {A*p; p=new B; B *q; q=new B;}

A.CLASS A CLASS B

B.CLASS A CLASS B CLASS B

C.CLASS A ClASS B

D.CLASS A CLASS B CLASS A CLASS B CLASS B CLASS B


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下面程序的输出结果是includeclass A{public: A( ) {cout 下面程序的输出结果是 #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( ) { D d;}A.constructAB.constructAC.constructAD.constructA destructA constructA constructA constructA destructA constructA constrnctA destructA destructA constructA destructA destructA destructA destrctA destructA destructA

下面程序输出的结果为 #include"iostream.h" class A { public: A(){cout<<"CLASSA"<<endl;} ~A() {} }; class B:public A { public: B(){cout<<"CLASSB"<<endl;} ~B() {} }; void main() { A * p; p=new B; B *q; q=new B; }A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A CLASS B CLASS A CLASS BD.CLASS A CLASS B CLASS B CLASS B

下面程序输出的结果为#include"iostream.h"class A{public:A( ){cout<<"CLASS A"<<endl;}~A( ){}};class B:public A{public:B( ){cout<<"CLASS B"<<endl;}~B( ){}};void main( ){A*p;p=new B;B *q;q=new B;}A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A CLASS B CLASS A CLASS BD.CLASS A CLASS B CLASS B CLASS B

以下程序的执行结果是______。 include class base { public: virtual void who(){c 以下程序的执行结果是______。include<iostream.h>class base{public:virtual void who(){cout<<"base class"<<endl:}};class derrvel:public base{public:void who(){cout<<"derivel class"<<endl:}};class derive2;public base{public:void who() {cout<<"derive2 class"<<endl;}};void main(){base obj1,*P;derive1 obj2;derive2 obj3:p=obj1;p->who();p=obj2:p->who();p=obj3;p->who();}

下面程序输出的结果为( )。 #include"iostream.h" classA {public: A(){cOUt"CLASSA"endl;} ~A(){}}; ClaSSB:publicA {public: B(){cout"CLASSB"endl;} ~B(){}}; voidmain() {A*P; P=newB: B*q: q=newB;}A.CLASSAB.CLASSA CLASSBCLASSB CLASSBC.CLASSAD.CLASSA CLASSBCLASSB CLASSACLASSB CLASSBCLASSB

下面程序输出的结果为 #include"iostream.h” class A { public: A(){cout<<"CLASSA"<<endl;} ~A() {} }; class B:public A { public: B(){cout<<"CLASS B"<<endl;} ~B(){} }; void main() { A*p; p=new B;A.CLASS A CLASS B CLASS B CLASS BB.CLASS A CLASS B CLASS A CLASS BC.CLASS A CLASS B CLASS BD.CLASS A CLASS B