account admin; ifstream ifile("D:\\admin.txt"); string id; string pas; while (getline(ifile, id)) { admin.id = id; admin.password = pas; } ifile.close(); string tmi; cout << admin.id; string tmp; system("cls"); cout << "ID:" << ends; cin >> tmi; if (tmi == admin.id) { cout << "Password:" << ends; cin >> tmp; if (tmp == admin.password) { cout << " ___________________________________________________________________________________" << endl; cout << "| |" << endl; cout << "| Welcom,admin. | " << endl; cout << "| |" << endl; cout << "|___________________________________________________________________________________|" << endl; system("cls"); } } 这段代码哪里有问题

这段代码的问题在于：

1. 在读取 `admin.txt` 文件时，只读取了 `id`，没有读取 `password`，因此 `admin.password` 变量未被正确赋值。

2. 在读取 `admin.txt` 文件时，没有将 `pas` 变量与文件中的密码进行匹配，导致 `admin.password` 变量仍然未被正确赋值。

3. 在读取完 `ifile` 后，没有将 `ifile` 关闭。

4. 在输出 `admin.id` 时，未在字符串后添加换行符。

以下是修改后的代码：

account admin;
ifstream ifile("D:\\admin.txt");
string id;
string pas;
if (getline(ifile, id)) {
    if (getline(ifile, pas)) {
        admin.id = id;
        admin.password = pas;
    }
}
ifile.close();
string tmi;
cout << admin.id << endl;
string tmp;
system("cls");
cout << "ID:" << ends;
cin >> tmi;
if (tmi == admin.id) {
    cout << "Password:" << ends;
    cin >> tmp;
    if (tmp == admin.password) {
        cout << " ___________________________________________________________________________________" << endl;
        cout << "|                                                                                   |" << endl;
        cout << "|                                 Welcom,admin.                                     | " << endl;
        cout << "|                                                                                   |" << endl;
        cout << "|___________________________________________________________________________________|" << endl;
        system("cls");
    }
}