题目内容:
有如下程序: #include<iostream.h>
usingnamespacestd;
classBase
{
public:
Base(){cout<<"BB";f();}
voidf(){cout<<"BF";}
};
classDerived:publicBase
{
public:
Derived(){cout<<"DD";}
voidf(){eout<<"Df";}
};
intmain(){Derivedd;return0;}
执行上面的程序将输出( )。 A.BBBfDD
B.BBDfDDDf
C.DD
D.DDBBBf
参考答案:
答案解析: