读取目录中文件名的方法 C++

void get_finename() {
    ifstream in;
    in.open("filelist.txt", ios::in);
    if (!in) {
        cout << "open file fail!";
        exit(1);
    }
    else cout << "open file success!" << endl;
    while (!in.eof())
    {
        string temp;
        getline(in, temp, ‘\n‘);//读每行的最后一个会读取到形如\n6B
        cout << temp << endl;
    }
    in.close();
}