以下程序执行后的输出结果是 ( )。include class Basel{public: void fun(){ cout 以下程序执行后的输出结果是 ( )。 #include ＜iostream.h＞ class Basel { public: void fun(){ cout＜＜"Basel"＜＜end1; } }; class Base2 { public: void fun() { cout＜＜"Base2"＜＜end1; } } class Derived : public Basel,public Base2 { }; void main() { Derived Obj; Obj.fun(); }A．BaselB．Base2C．BaselBase2D．程序产生二义性
以下程序执行后的输出结果是 ( )。include class Basel{public: void fun(){ cout<<
以下程序执行后的输出结果是 ( )。 #include ＜iostream.h＞ class Basel { public: void fun(){ cout＜＜"Basel"＜＜end1; } }; class Base2 { public: void fun() { cout＜＜"Base2"＜＜end1; } } class Derived : public Basel,public Base2 { }; void main() { Derived Obj; Obj.fun(); }
A．Basel
B．Base2
C．BaselBase2
D．程序产生二义性
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下面程序的输出结果为:Base:: fun,请将程序补充完整。include class Base{public: 【】 下面程序的输出结果为：Base:: fun，请将程序补充完整。include ＜iostream.h＞class Base{public:【 】 fun(){cout＜＜"Base::fun"＜＜end1:}class Derived : public Base{public:【 】 fun(){ cout＜＜"Derived::fun"＜＜end1; }};int main(){Base a,*pb;Derived b;pb = b;pb-＞fun();return 0;}
执行这个程序的输出结果是(); include using namespace std; class TestClass1 { publ 执行这个程序的输出结果是( )；include＜iostream＞using namespace std;class TestClass1{public:void fun1(){cout＜＜"TestClass1\n";}virtual void fun2(){cout＜＜"TestClass1\n";}};class TestClass2:public TestClass1{public:void fun1(){cout＜＜"TestClass2\n";}void fun2(){cout＜＜"TestClass2\n";}};void f(TestClass1b){b.fun1();b.fun2();}int main(){TestClass2 obj;f(obj);return 0;}
下面程序的运行结果是()。includeclass base{protected:int a;public:base(){cout 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．0123B．3120C．0312D．3012
下列程序的运行结果是______。 include class A { public: virtual void use( ) {cou 下列程序的运行结果是______。include＜iostream.h＞class A{public:virtual void use( ) {cout＜＜"in A\n";}};class B:public A{public:virtual void use( ) {cout＜＜"in B\n";}};class C:public B{public:virtual void use( ){cout"in C\n";}};void main( ){A*obj；bj=new C;obj-＞use( );delete obj;}
下列程序的输出结果为2,请将程序补充完整。 include using namespace std; class Basc 下列程序的输出结果为2，请将程序补充完整。include＜iostream＞using namespace std;class Basc{public:【 】void fun(){cout＜＜1;}};class Dcrived:public Base{public:void fun(){cout＜＜2；}};int main(){Base*p=new Derived;p-＞fun();delete p;return 0;}
有如下程序:include using namespace std;class Base{ public: void fun() { cout 有如下程序： #include ＜iostream＞ using namespace std; class Base { public: void fun() { cout＜＜"Base::fun"＜＜endl; } }; class Derived : public Base { public: void fun() { ______ cout＜＜"Derived::fun"＜＜endl; } }; int main() { Derived d; d.fun(); return 0; } 已知其执行后的输出结果为： Base::fun Derived::fun 则程序中下划线处应填入的语句是( )。A．Base.fun();B．Base::fun();C．Base-＞fun();D．fun();
下面程序的结果是includeclass A{int a;public:A( ) :a(1) {}void showa ( ) {cout 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) {} void showa( ) {cout ＜ ＜ a;} }; class C: public A, public B { t a; public: C( ) :a(3) {} void showa( ) {cout ＜ ＜ a;} }; void main( ) { C c; c.showa( ) ; }A．1B．2C．3D．程序有错误
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
下列程序的运行结果是______。include class Base { public: void f(int x){cout 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
以下程序的输出结果是_____。 include void fun( ) {static int a=0; a＋=2;cout 以下程序的输出结果是_____。include＜iostream.h＞void fun( ){ static int a＝0;a＋＝2;cout ＜ ＜ a ＜ ＜ " ";}void main( ){ int cc;for(cc＝1;cc＜4;cc＋＋)fun( ) ;cout ＜ ＜ endl;}
以下程序的执行结果是______。 include class A{ int a: public: void seta(int x) { 以下程序的执行结果是______。include＜iostream.h＞class A{int a：public:void seta(int x) {a=x；}void showa() {cout＜＜a＜＜end1;}};class B{int b；public：void setb(int x) {b=x；}void showb(){cout＜＜b＜＜end1;}}；
执行如下程序将输出():includeusing namespace std;class Base{public:Base(){cout 执行如下程序将输出( ): #include＜iostream＞ using namespace std; class Base { public: Base(){cout＜＜"BB";fun();} void fun (){tout＜＜"Brim";} }; class Derived:public Base { public: Derived(){cout＜＜"DD";} void fun (){cout＜＜"Dfun";} }; int main(){Derived d;return 0;}A．DDB．BBDfunDDDfunC．BBBfunDDD．DDBBBfun
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()；}
有如下程序:include using namespace std;class Base{public:void fun() {cout 有如下程序：#include ＜iostream＞using namespace std;class Base { public: void fun() {cout＜＜"Base:: fun"＜＜end1; }};class Derived: public Base ( public: void fun() { ____________________________ cout＜＜"Derived:: fun"＜＜end1; }};int main() { Derived d; D. fun(); return O;}已知其执行后的输出结果为：Base:: funDerived:: fun则程序中下划线处应填入的语句是( )。A．Base. fun ()；B．Base:: fun ()；C．Base-＞fun()；D．fun()
在下面程序的横线处填上适当的内容,使程序执行后的输出结果为ABCD。 include usingn 在下面程序的横线处填上适当的内容，使程序执行后的输出结果为ABCD。include ＜iostream.h＞using namespace std;class A{public: A() {cout＜＜'A';};class B:______{public: B() {cout＜＜'B';}};class C:______{public: C(} cout＜＜'C';}};class D:public B, public C{public: D(){cout＜＜'D';}};void main(){D obj;}
有以下程序: include class A { intx; public: A(int a) { x=a;} friend class B; 有以下程序：include＜iostream.h＞class A{int x;public:A(int a){x=a;}friend class B;}class B{public:void print(A a){a. x--;cout＜＜a.x＜＜end1;}};void main(){A a(10);B b;b.print(a) ;}程序执行后的输出结果是【 】。
以下程序的执行结果是()。includetemplateclass Sample{ T n;Public: Samp 以下程序的执行结果是( )。 #include＜iostream．h＞ template＜class T＞ class Sample { T n； Public： Sample (T i){n=i;) void operator ++()； void disp() {cout＜＜"n="＜＜n＜＜endl；} }； template＜class T＞ void Sample＜T＞:: opetatA．n=aB．a=OC．n=bD．a=b
以下程序执行结果是 ( )。include class Base{public virtual void fun() {cout 以下程序执行结果是 ( )。 #include ＜iostream.h＞ class Base { public virtual void fun() { cout＜＜"B"; } }; class Derived { public: Derived() { cout＜＜"D"; } virtual void fun(){ Base::fun(); cout＜＜"C"; } } int main () { Base *ptr; Derived obj; ptr=obj; p-＞fun ( ); return 0; }A．DBCB．DCBC．BDCD．CBD
下面程序的结果是includeclass A { int a;public: A():a(1){} void showa(){cout 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){} void showa(){cout＜＜a；} }； class C：public A，public B { int a； public： C()：a(3) ㈠ voidshowa(){cout＜＜a；} }； voidmain() { C c； c．showa()； }A．1B．2C．3D．程序有错误
有以下程序:include using namespace std;class A{public: virtual void show() {cout 有以下程序：include ＜iostream＞using namespace std;class A{public:virtual void show(){cout＜＜"A";}};class B : public A{public:void show(){cout ＜＜ "B";}};void display( A * obj ){obj-＞ show();}int main ( ){A demol;B demo2;display( demol );display( demo2 );return 0;}执行后的输出结果为【 】。
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: void fun() { cout＜＜"Base::fun"＜＜endl; } }; class Derived: public Base { public: void tim() } ____________ cout＜＜"Derived:: fun"＜＜endl; } }; int main() { Derived d; d.fun(); return O; } 已知其执行后的输出结果为： Base::fun Derived::fun 则程序中下划线处应填入的语句是A．Base.fun()；B．Base::fun()；C．Base-＞fun()；D．fun()；
下面程序的结果是()。includeclass A{int a;public:A():a(1){}void showa(){cout 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){} void showa(){cout＜＜a；} )； class C：public A，public B { int a； puA．1B．2C．3D．程序有错误
下面程序的结果是 ______。includeclass A{ public:virtual voidfun()=0{};};class 下面程序的结果是 ______。 #include＜iostream.h＞ class A{ public: virtual void fun()=0{}; }; class B:public A{ public: void fun () {cout＜＜ "new file" ;} }; class C: public A{ public: void fun (){cout＜＜"open file"＜＜ " " } }; class D: public A{ public: void fun () {cout＜＜ "save file\n" ;} }; void main() { A a,*p; B b; C c; D d; p=c; p-＞fun (); p=b; p-＞fun (); p=d; p-＞fun(); }A．new file open file save fileB．new file new file new fileC．编译出错D．open file new file save file
下面程序的运行结果是includeclass base{protected: int a;public: base(){cout 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．123B．3120C．312D．3012
下列程序的运行结果是______。 include class Base { public: virtual void func(int 下列程序的运行结果是______。include＜iostream.h＞class Base{public:virtual void func(int i){cout＜＜"class Base:"＜＜i＜＜end1;)};class Derived: public Base{public:void func(double d){cout＜＜"class Derived:"＜＜d＜＜endl;}};void main( ){Base a,*p=a;Derived b;p=b;(*p).func(3.3);}
以下程序的执行结果是______. include c1ass A { public: virtual void funl () 以下程序的执行结果是______.include＜iostream.h＞c1ass A{public：virtual void funl () { cout＜＜"A fun1"＜＜endl；}virtual void fun2 () {cout＜＜"A fun2"＜＜endl;void fun3 () {cout＜＜" A fun 3 "＜＜endl：)void fun4 () {cout＜＜" A fun4 "＜＜endl：}
以下程序的执行结果为______。include class A {public:A(){cout 以下程序的执行结果为______。include＜iostream.h＞class A{public：A(){cout＜＜“a”；}～A(){cout＜＜“b”；}}；class B：public A{public：B(){cout＜＜“c”；)～B(){cout＜＜“d”；}}；void main(){B b；}