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" 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.CLASSA

B.CLASSA CLASSBCLASSB CLASSB

C.CLASSA

D.CLASSA CLASSBCLASSB CLASSACLASSB CLASSBCLASSB


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