下面程序输出的结果为 #include iostream.h class A { public: A( ) { cout < < CLASS A < < end1;} ~ A( ) { } }; class B:public A { public: B( ){ cout < < CLASS B < < end1;} ~ B( ) { } }; void main( ) { A * p; p=new B; B * q; q=new B; }
A.CLASS A CLASS B
B.CLASS A CLASS B CLASS B
C.CLASS A CLASS B CLASS A CLASS B
D.CLASS A CLASS B CLASS B CLASS B