#include "suc.h"
{
A *pa = new B;
char* str = "Hello";
pa->funA(str);
pa->fun2();
pa->fun3();
delete pa;
int x = 9;
pb->funA();
pb->fun2();
pb->fun3();
delete pb;
A& a = b;
a.funA(str);
a.fun2();
a.fun3();
// a.funA(x);
ppa->funA(str);
ppa->fun2();
}