我正在制作一个doublelyLinkedList.该错误与我的Remove方法有关.我无法弄清楚这一点.有人知道吗?
这是错误的地方?
Error 1 error C2027: use of undefined type
‘DoublyListNode’ c:\users\conor\documents\college\c++\projects\repeat
– doublylinkedlist\repeat – doublylinkedlist\doublylinkedlist.h 230 1 Repeat – DoublyLinkedList
// -------------------------------------------------------------------------------------------------------
// Name: Remove
// Description: Removes the node that the iterator points to, moves iterator forward to the next node.
// Arguments: p_iterator: The iterator to remove
// isForward: Tells which direction the iterator was going through the list
// Return Value: None.
// -------------------------------------------------------------------------------------------------------
void Remove(DoublyListIterator<Datatype>& m_itr)
{
DoublyListNode<Datatype>* node = m_head;
// if the iteratordoesn’t belong to this list, do nothing.
if (m_itr.m_list != this)
return;
// if node is invalid, do nothing.
if (m_itr.m_node == 0)
return;
if (m_itr.m_node == m_head)
{
// move the iteratorforward and delete the head.
m_itr.Forth();
RemoveHead();
m_size--;
}
else
{
// scan forward through the list until you find
// the node prior to the node you want to remove
while (node->m_next != m_itr.m_node)
node = node->m_next;
// move the iterator forward.
m_itr.Forth();
// if the node you are deleting is the tail,
// update the tail node.
if (node->m_next == m_tail)
{
m_tail = node;
}
// delete the node.
delete node->m_next;
// re-link the list.
node->m_next = m_itr.m_node;
m_size--;
}
}
如果需要更多代码,请询问.我不想在Stack溢出用户上放置大量代码.
解决方法:
您正在检查尾部节点,但不检查头部和尾部之间的节点.您甚至在将节点链接到下一个成员之前删除该节点就会破坏链.
让我们分析: –
while (node->m_next != m_itr.m_node)
node = node->m_next;
在循环节点之后 – > m_next指向m_itr.m_node
delete node->m_next;
// re-link the list.
node->m_next = m_itr.m_node;
您正在分配已删除的节点!!!!
更改代码: –
node->m_next = m_itr.m_node;
delete m_itr;
标签:doubly-linked-list,c 来源: https://codeday.me/bug/20190729/1571602.html
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