下面程序输出的结果为 #include iostream.h” class A { public: A(){cout<< CLASSA <<endl;} ~A() {} }; class B:public A { public: B(){cout<< CLASS B <<endl;} ~B(){} }; void main() { A*p; p=new B; B*q; q=new B; }
A.CLASS A CLASS B CLASS B CLASS B
B.CLASS A CLASS B CLASS A CLASS B
C.CLASS A CLASS B CLASS B
D.CLASS A CLASS B