如下程序的输出是 #include<iostream> using namespace std; class Base{ public: Base( ){cout<<"BB";f( );} void f( ){cout<<"Bf";} }; class Derived:public Base{ public: Derived( ){eout<<"DD";} void f( ){cout<<"Df";} }; int main( ){Derived d;return 0;}
A.BBBff)D
B.BBDfDDDf
C.DD
D.DDBBBf
第1题:
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( ){DERIVED x;return 0;} 程序的输出结果是
A.BASE
B.DERIVED
C.BASEDERIVED
D.DERIVEDBASE
第2题:
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.DD
B.BBDfunDDDfun
C.BBBfunDD
D.DDBBBfun
第3题:
有如下程序 #include<iostream> using namespace std; class Base{ protected: Base(){cout<<'A';} Base(char c){cout<<c;) }; class Derived: public Base{ public: Derived(char c){cout<<c;) }; int main(){ Derived dl('B'); return 0; } 执行这个程序屏幕上将显示输出( )。
A.B
B.BA
C.AB
D.BB
第4题:
有如下程序: #include <iostream> using namespace std; class Base { public: Base(){ cout<<"BB";f(); } void f() { cout<<"Bf";} }; class Derived:public Base { public: Derived() { cout<<"DD"; } void f(){ cout<<"Df"; } }; int main(){ Derived d; return 0;}执行上面的程序将输出______ 。
A.BBBfDD
B.BBDfDDDf
C.DD
D.DDBBBf
第5题:
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(){DERIVED x; return 0;} 执行后的输出结果是______ 。
A.BASE
B.DERIVED
C.BASEDERIVED
D.DERIVEDBASE