这破提示误导我，我以为还要补全#呢

#include<bits/stdc++.h>
using namespace std;

string s;
int i = 0;

typedef struct node{
	char data;
	struct node *left,*right;
}node,*BitTree;

void CreateBitTree(BitTree &T){
	char x = s[i++];
	if(i>s.size())return;
	if(x== '#')
		T = NULL;
	else{
		T = new node;
		T->data = x;
		T->left = NULL;
		T->right = NULL;
		CreateBitTree(T->left);
		CreateBitTree(T->right);
	}
}

void InOrder(BitTree T){
	if(T != NULL){
		InOrder(T->left);
		cout << T->data << " ";
		InOrder(T->right);
	}
}

int main(){
	while(cin >> s){
		BitTree T;
		CreateBitTree(T);
		InOrder(T);
		cout << endl;
		i=0;
	}
	return 0;
}