单向链表的删除子函数的一个问题
如果把p = pHead改成 p=pHead->pNext，再把下面的p->pNext换成p，为什么最后就不对了呢？求大神解答啊bool delete_list(PNODE pHead, int pos, int *pVal)
{
int i = 0;
PNODE p = pHead;
while (p ->pNext != NULL && i< pos-1)
{
i++;
p = p->pNext;
}
if (p ->pNext == NULL || i>pos-1)
{
return false;
}
PNODE q = p->pNext;
*pVal = q->data;
p->pNext = p->pNext->pNext;
free(q);
return true;
}
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