下面程序的运行结果为includeclass A{public: A( ){cout 下面程序的运行结果为 #include<iostream.h> class A { public: A( ){cout<<"1";} ~A( ){cout<<"2";} }; class B:public A { public: B( ){cout<"3";} ~B( ){cout<<"4";} }; void main( ) { BA.1234B.1324C.1342D.3142

下面程序的运行结果为includeclass A{public: A( ){cout<<"1";}~A( ){cout<<"2";}}

下面程序的运行结果为 #include<iostream.h> class A { public: A( ){cout<<"1";} ~A( ){cout<<"2";} }; class B:public A { public: B( ){cout<"3";} ~B( ){cout<<"4";} }; void main( ) { B

A.1234

B.1324

C.1342

D.3142


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下面程序的运行结果为( )。 #include(iostream.h) Class A { public:A(){cout<<“1”;} ~A(){cout<<“2”;} }; Class B:public:A { public: B(){cout<<“3”;) ~B(){cout<<“4”;} }; Void main() { B b; }A.1234B.1324C.1342D.3142

下面程序的运行结果为 include class A { public: A( ) {cout 下面程序的运行结果为#include<iostream. h>class A{public:A( ) {cout < <"1";}~A( ) {cout < <"2";}};class B:public A{public:B( ) {cout < <"3";}~B( ) {cout < <"4";}};void main( ){B b;}A.1234B.1324C.1342D.3142

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下面程序的运行结果为includeclass A{public:A(){cout 下面程序的运行结果为 #include<iostream,h> class A { public: A(){cout<<"1";} ~A(){cout<<"2";} }; Class B:public A { public: B(){cout<<"3";} ~B(){cout<<"4";} }; void main() { B b; }A.1234B.1324C.1342D.3142

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