void TreePrint(HuffmantreeNode*pRoot, int lay)
{
if (pRoot == NULL)
return;
TreePrint(pRoot->rNode, lay + 5);
for (int i = 0; i < lay; i++)
cout<< ' ';
cout << pRoot->nodepower << endl;
TreePrint(pRoot->lNode, lay + 5);
}
上面代码是对一个二叉树的缩进输出,测试成功,现在需要把结果输出到一个txt文件
我修改了代码如下,可是什么也没有输出,求大家解答啊
void TreePrint(HuffmantreeNode*pRoot, int lay)
{
ofstream out;
out.open("TextFile2.txt");
if (pRoot == NULL)
return;
TreePrint(pRoot->rNode, lay + 5);
for (int i = 0; i < lay; i++)
out<< ' ';
out << pRoot->nodepower << endl;
TreePrint(pRoot->lNode, lay + 5);
}