new: Student Name Bill ID 12-345-6 GPA 3.8 
initialize: Student=HASH(0x10023180) Name Bill ID 12-345-6 GPA 3.8 
new: Student 
initialize: Student=HASH(0x10023198) 
new: Student GPA 4 Name Hillary ID 98-765-4 
initialize: Student=HASH(0x100231b0) GPA 4 Name Hillary ID 98-765-4 
Before...
PrintRec: Student=HASH(0x10023180) 
Name: Bill
ID: 12-345-6
GPA: 3.8

PrintRec: Student=HASH(0x10023198) 
Name: NOBODY
ID: NO_ID
GPA: 0

PrintRec: Student=HASH(0x100231b0) 
Name: Hillary
ID: 98-765-4
GPA: 4

new: Student Name Monica 
initialize: Student=HASH(0x10023210) Name Monica 
Modify: Student=HASH(0x10023180) GPA 1.6 
After...
PrintRec: Student=HASH(0x10023180) 
Name: Bill
ID: 12-345-6
GPA: 1.6

PrintRec: Student=HASH(0x10023198) 
Name: NOBODY
ID: NO_ID
GPA: 0

PrintRec: Student=HASH(0x100231b0) 
Name: Hillary
ID: 98-765-4
GPA: 4

PrintRec: Student=HASH(0x10023210) 
Name: Monica
ID: NO_ID
GPA: 0