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 ACLASS B
B.CLASS ACLASS BCLASS B
C.CLASS ACLASS BCLASS ACLASS B
D.CLASS ACLASS BCLASS BCLASS B