#include?<stdio.h>

struct?weapon{
??int?price;
??int?atk;
??struct?weapon?*?next;
};

int?main()
{
????struct?weapon?a,b,c,?*head;
????a.price?=?100;
????a.atk?=?100;
????b.price?=?200;
????b.atk?=?200;
????c.price?=?300;
????c.atk?=?300;
????head?=?&a;
????a.next?=?&b;
????b.next?=?&c;
????c.next?=?NULL;

????struct?weapon?*p;
????while(p!=NULL){
????????printf("%d,%d\n",p->price,p->atk);
????????p=p->next;
????}

????return?0;
}

請問哪里導致的錯誤？？。。。