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下面程序的结果是 #include<iostream.h> class A { public: A( ) {cout<<"construtA"<<endl;} virtual~A( ) {cout<<"destructA"<<endl;}}; class B:public A {}; class C:public A {}; c

单选题
2022-03-03 09:12
A、constructA destructA
B、constructA constructA destructA destructA
C、constructA constructA constructA destructA destructA destructA
D、constructA onstructA constructA constructA destructA destructA destructA destructA
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正确答案
B

试题解析
解析:类D继承了类C和类B,所以在构造的时候分别构造类B和类C。

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