getline(）未按预期工作

嗨，我的getline（）出现未知问题。我的程序应该定制一个提示，然后getline（）应该读取用户输入，但由于某种原因，每次我运行它时，它只定制提示并跳到下一个提示符，不允许我输入任何内容。我会发布代码，希望你们能提供一些建议。

int main()
{
    int students = 0;
    students = getStudents(students);
    int quizzes = 0;
    quizzes = getQuizzes(quizzes);
    string studentArray[50];
    int* quizArray = new int[quizzes];
    double* studentAverage = new double[students];
    string studentName = "";
    for(int i = 0; i < students; i++)
    { 
        cout << "Enter the students name: ";
        getline(cin, studentName);
        studentArray[i] = studentName;
        cout << studentName;
        for(int j = 0; j < quizzes; j++)
        {
            cout << "Enter quiz " << j+1 << ":";
            cin >> quizArray[j];
        }
        studentAverage[i] = calculateAvergage(quizArray,quizzes);
        cout << studentArray[i];
        cout << studentName;
    }
    cout << endl;
    cout << "Student              Quiz Average" << endl << endl;
    cout << "---------------------------------" << endl << endl;

    for(int i = 0; i < students; i++)
    {
        cout << studentArray[i];
        cout << setw(10) << studentAverage[i] << endl << endl;
    }   
}
int getStudents(int students)
{
    cout << "How many students?  ";
    cin >> students;
    cout << endl;
    if(students > 50)
    {
        cout << "Invalid number of students, enter a number less than 50: ";
        cin >> students;
        cout << endl;
    }
    return students;
}
int getQuizzes(int quizzes)
{
    cout << "How many quizzes?  ";
    cin >> quizzes;
    cout << endl;
    if(quizzes > 10)
    {
        cout << "Invalid number of quizzes, enter a number less than 10: ";
        cin >> quizzes;
        cout << endl;
    }
    return quizzes;
}
double calculateAvergage(int quiz_array[],int num_quizzes)
{
    double average = 0;
    for(int i = 0; i < num_quizzes; i++)
    {
        average = quiz_array[i] + average;
    }
    average = (average/num_quizzes);
    return average;
}