ID and name of all personnel in the array
1:Peter is a student
2:Peter is an instructor earning a salary of 0.0 with 1 student in his/her class
   Student[0]: 5
3:Sandy is an instructor earning a salary of 25000.0 with 0 student in his/her class
4:Janitor Bob is an employee earning a salary of 0.0
5:Tom is a student whose instructor is Peter, and his/her instructor's ID is 2
6: Maggie is a student whose instructor is Susan, and his/her instructor's ID is 7
7: Susan is an Instructor earning a salary of 40000 with 1 student in his/her class
    Student[0]: 6