everest% CC -c typer.C
everest% CC -DNDEBUG main3.C bstring3.C typer.o
main3.C:
bstring3.C:
everest% 


everest% a.out
Pick (1-3): 1
James Bond age=37
Person
ptr is pointing to a Person
everest% 


everest% a.out
Pick (1-3): 2
Student: Peppermint Patty age=7 year=1 gpa=1.2
Student
ptr is pointing to something else
everest% 


everest% a.out
Pick (1-3): 3
Faculty: Newt Gingrich age=53 experience=12
Faculty
ptr is pointing to something else
everest%