class A{ void P1（){cout$amp;<amp;<quot;$A111"}; void P2（){cout$amp;<amp;<quot;$A222"}; }; class B:pub

class A{

void P1(){cout$amp; void P2(){cout$amp;};

class B:public A{

void P1(){cout$amp; virtual void P2(){cout$amp;}

..........

A*cl=NULL;

cl=new A;

A->P1();

A->P2();

delete cl;

cl=NULL;

cl=new B;

A->P1();

A->P2();

delete cl;

cl=NULL;

..........

写出运行结果;

请帮忙给出正确答案和分析，谢谢！