Node* findNode(char* Name, Node*p)
{
      if(p == NULL)
      return NULL;
      int cmp;
      cmp = strcmp(p->Name, char*Name);
      switch(cmp)
      {
            case 0:
            return p;
            case 1:
            Node* q = findNode(Name, p->leftChild);
            return q;
            break;
            case -1:
            Node* q = findNode(Name, p->rightChild);
            return q;
            break;
      }
}