为什么p一进入循环就变成无效的指针了

源自：5-1 Linux C 动态数据结构-静态链表

#include <stdio.h>

#include <stdlib.h>

typedef struct weapon

{

char name;

int money;

struct weapon *next;

}lianbiao;

int main(void)

{

lianbiao a,b,c,*head;

lianbiao *p;

a.name = '1';

a.money = 1;

b.name = '2';

b.money = 2;

c.name = '3';

c.money = 3;

head = &a;

a.next = &b;

b.next = &c;

c.next = NULL;

p = head;

while(p!=NULL)//在这里就变成了无效的指针在之前p还正常

{

printf("%s,%d\n",p->name,p->money);

p->next;

}

system("pause");

return 0;

}

提问者：慕粉233007138 2017-08-05 21:32