c 链表冒泡排序找错

p->next = head; 和 head = p->next; 这样子head指向了自己

struct student *pai(struct student *head)
{
struct student *ptemp,*pPre,*pCurr,*pLastCur;
ptemp = NULL
pCurr = NULL;
pPre = NULL;
pLastCur = head;

while(pLastCur->next != NULL)
{
pCurr = pLastCur;
if(pPre == NULL)
{
if(pCurr->num > pCurr->next->num)
{
pTemp = pCur->next;
pCurr -> next = pCur->next->next;
head = pTemp;
pPre = pTemp;
pTemp->next = PCur;
}
}
while(pCurr ->next != NULLL)
{
if(pCurr->num > pCurr->next->num)
{
//交换指针
pPre->next = pCur->next;
pTemp = pCur->next;
pCur->next = pCur->next->next;
pTemp->next = PCur;
pPre = pCur;
}
else
{
pCur = pCur -> next;
Pre = pCur;
}
}
pPre = pLastCur;
pLastCur = pLastCur->next;
}
return head;
}
对着你的 我改了改· 你看看有错没 我没试。