利用list模板建立存储学生信息的链表，存储输入的若干学生信息，并将链表内容存储到指定文件

要求：

1、自定义学生信息类

成员包括：学号、姓名、专业、班级；

成员函数包括：为成员赋值的有参构造函数，信息的输出函数，释放成员空间的析构函数

2、输入学生信息学号为0时终止输入，并将输入内容显示出来

3、利用迭代器访问链表，将数据存储到文件，文件名为“student_info.txt”

4、建议以输出对象作为信息输出函数的参数，根据参数对象的不同输出信息到显示器或文件

-The list template linked list to store student information, storage input student information, and linked lists content stored in the specified file requirements: 1, the custom student information class members include: school, name, profession, class　member functions include: assignment as a member of the argument constructor output function of the information, the release of members of the space destructor input student Informatics No. 0:00 terminate input and input content displayed using iterators access the list, the data stored in the file, the file name is " student_info.txt"　4, proposed information output parameters of the function to output the object as different output information according to the parameters of the object to display or file