下面程序的运行结果是()。 include<iostream.h> classbase{ protected: inta; public: base(){cout<<"0";} }; classbasel:virtualbase{ public: basel(){cout<<"1";} }; classbase2:virtualbase{ public: base2(){cout<<"2";} }; classderived:publicbasel,publicbase2{ public:

derived(){cout<<"3";} }; voidmain() { derivedobj; cout<<endl; } A.0123 B.3120 C.0312 D.3012

时间:2023-02-05 16:12:40

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