typedef struct _data * pdata;

typedef struct _data

{

 int x;

 int y;

}data;


int main(void)

{

   pdata *p    <------------ 이거 무슨뜻임? ㅠㅠ

}                                           1. data *p?

                                             2. data **p?


                                         둘중 뭐가 맞냐