写一个教室类,有学生/老师/网管

其中学生人数可以不同,但是开班以后,人数必须固定(数组)

老师只有一个,所有教室共享(static)

网管所有教室共享,并且不变.

要求实现代码以后,创建一个教室对象-Write a classroom class, a student/teacher/network management in which the number of students may be different, but the classes later, the number must be fixed (an array) is only one teacher, all the classrooms shared (static) Network shared in all classrooms, and the same. Requirements After the realization of the code to create a class object