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下面程序的运行结果是()。 #include<iostream.h>classbase{protected: inta; public: bas
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
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_panel_vip.png)