Q1: Are we supposed to create a file for the program to open?
Q2: What the program is suppose to be opening? 
Q3: What are ifstream and ofstream supposed to be reading and writing in?
Q4: How do we know it wrote the file the way we want to it be written?


Q1: Are we supposed to create a file for the program to open?

A1: Yes you can type in any file (like using vi) to test your program.
OR "p9.in" is available to you in "Assignments/p9.in".  The actual input 
by the autograder.


Q2:  What the program is suppose to be opening? 

Q2:  Look at your I/O Streams handout page 2, top program example.
The open() member function is being invoked by the object "ifs" type
ifstream , "ifs.open( infile );" .
"infile" is the name of the file you type in when you run this program
as you have the answer in Q1 above, "Assignments/p9.in".


Q3: What are ifstream and ofstream supposed to be reading and writing in?

A3: Read  in from "infile" which is entered as "Assignments/p9.in"
Write to file "outfile" which is entered as whatever you want e.g "p9.out"
(Not suggested to write over your old program names "p1.C".


Q4: How do we know it wrote the file the way we want to it be written?

A4: Type "more p9.out" or "cat p9.out" or "vi p9.out" to look at the contents 
of a file.