C++学生数据库管理系统输入随机跳过问题求助

我正在开发一款学生数据库管理系统，测试添加新学生功能时，程序会随机跳过输入步骤，直接进入下一项，无法输入被跳过的内容。例如输入完姓名后，显示“请输入所学专业（Programme of study）”的提示后，会立即在同一行出现“请输入学习等级(C、I或H)”的提示，根本没法输入专业信息。

相关代码 #

int main()
{

    // 设置输入姓名的最大长度为20
    char data[20];
    int n = 0, option = 0, nCount = 0;

    // 初始化科目成绩
    string empty = "00";
    string programme = " ";
    string department = " ";
    char level = ' ';

    // 存储数据库的文件名
    ifstream f("SDB.txt");
    string line;

    // 统计文件中的总行数
    for (int i = 0; std::getline(f, line); ++i) {
        nCount++;
    }

    // 选项页面
    while (option != 5) {
        cout << "\nPlease choose an option\n"
                "1. Add new students\n"
                "2. Student Login\n"
                "3. Staff Login\n"
                "4. Admin View\n"
                "5. Exit\n"
                "Enter option: ";

        cin >> option;

        // 选择不同选项后的操作
        if (option == 1) {
            cout << "Enter the number of students: ";
            cin >> n;

            nCount = nCount + n;

            for (int i = 0; i < n; i++) {
                ofstream outfile;
                outfile.open("SDB.txt", ios::app);

                // 存储学生的完整数据
                cout << "Please enter your student ID number: ";
                cin >> data;
                outfile << data << "\t";

                cout << "Please enter your name: ";
                cin >> data;
                int len = strlen(data);

                // 检查输入姓名的长度
                while (len < 20) {
                    data[len] = ' ';
                    len = len + 1;
                }
                outfile << data << "\n";

                // 录入所学专业
                cout << "Please enter the Programme of study you are in: ";
                cin >> programme;
                outfile << programme << "\t";

                // 录入学习等级
                cout << "Please enter which level of study you are in(C, I or H): ";
                cin >> level;
                outfile << level << "\t";

                // 初始插入空成绩数据
                outfile << empty << "\t";
                outfile << empty << "\t";
                outfile << empty << "\t";
                outfile << empty << "\t";

                cout << "\nPlease enter which department you are in: ";
                cin >> department;

                outfile << department << endl;
            }
        }
    }
}

内容的提问来源于stack exchange，提问作者LGGawd