3.10
5.從鏈表上刪除第i個節點。確保存在這樣一個節點。
void Delete_Node(List la, int i) {
List p,q;
int n, j=1;
p = la->next;
q = p;
n = List_length(la);
if (i<=n)
{
while (j!=i)
{
j++;
q = p;
p = p->next;
}
q->next = p->next;
}
else
{
cout << "error!" << endl;
}
}