循环遍历跳过的对象列表

Question

我正在制作学生对象列表，并希望迭代它们并输出它们拥有的值。我不确定为什么跳过for循环。任何帮助/指导将不胜感激。这是循环：

void studentInfo(list<Student> stuList) {
    cout << "in studentinfo" << endl;
    for (list<Student>::iterator it = stuList.begin(); it != stuList.end(); ++it) {
        cout << "in student info loop" << endl;
        cout << it->toString();
    }
    cout << "after loop" << endl;
}

我得到了循环之前和之后的cout消息。如果需要，这是toString（）方法。

string Student::toString() {
    stringstream outString;
    outString << "Name: " << name << "\nID: " << id << "\nAge: " << age << endl;
    return outString.str();
}

这是列表的填充方式，我通常在测试时添加2个学生对象：

void addToList(list<Student> stuList) {
    string tempName;
    int tempID;
    int tempAge;
    int numStudents;

    cout << "How many students will you be entering?\n";
    cin >> numStudents;

    for (int i = 0; i < numStudents; i++) {
        cout << "Enter student name: \n";
        cin >> tempName;
        cout << "Enter student id: \n";
        cin >> tempID;
        cout << "Enter student age: \n";
        cin >> tempAge;
        stuList.push_back(Student(tempName, tempID, tempAge));
    }
}