C ++ Eclipse：二进制搜索树节点-> data =变量似乎不起作用

Question

构建成功，但运行时停止于

节点->数据=出价；

在以下功能中。因此，输出成功打印到“ Loading CSV file 888” cout语句。我不确定是什么原因阻止了该代码的运行。

void BinarySearchTree::Insert(Bid bid) {
    // FIXME (2a) Implement inserting a bid into the tree
cout << "Loading CSV file 333" << endl;
Node* node = root;
cout << "Loading CSV file 888" << endl;
node->data = bid;
cout << "Loading CSV file 777" << endl;
if (root == NULL){
    //root->data = bid;
//root->left = 0;
//root->right = 0;
root = node;
node->left = NULL;
node->right = NULL;
cout << "Loading CSV file 444" << endl;
}
else
{
cout << "Loading CSV file 666" << endl;
Node* cur;
    cur = root;
    while (cur != NULL){
      if (strToDouble2(node->data.bidId) < strToDouble2(cur->data.bidId)){
         if (cur->left == NULL){
           cur->left = node;
           cur = NULL;
         }
         else{
           cur = cur->left;
         }
      }
      else
         if (cur->right == 0){
           cur->right = node;
           cur = NULL;
         }
         else{
           cur = cur->right;
         }
    node->left = NULL;
    node->right = NULL;
    cout << "Loading CSV file 5555" << endl;
    }
}
}

Answer 1

因为树为空，所以root为空指针，node也为node = root;。

通过存储要插入到根节点中的值开始是很奇怪的。
如果要添加节点，则代码应在某处显示new Node，插入的值应在该节点中。

找出在哪里创建它作为练习。