下面程序的输出结果是 #include＜iostream.h＞ class A { public: A( ) {cout ＜＜ "construtA" ＜＜ endl;} Virtual~A( ) {cout

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问题下面程序的输出结果是 #include＜iostream.h＞ class A { public: A( ) {cout ＜＜ "construtA" ＜＜ endl;} Virtual~A( ) {cout ＜＜ "destructA" ＜＜ endl;}}; class B: public A { }; class C:public A { }; class D:public B,public C { }; void main( ) { D d;}

选项 A、constructA
B、constructA
C、constructA
D、constructA destructA constructA constructA constructA destructA constructA constrnctA destructA destructA constructA destructA destructA destructA destrctA destructA destructA

答案B

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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本试题收录于：二级C题库NCRE全国计算机二级分类