1. (Sunday, April 29, 3:50 pm)	about "
At the end of the page 1 in the project description, there are two "'s: one
for the openning " and the second one for the closing ". However, there are
the same in ASCII. So please change the first " to '. 

2. (Wednesday, May 2, 8:30 am) about '
The following statement assigns ' to variable ch

char ch;
ch = '\'';

3. (Wednesday, May 2, 8:30 am) shift cipher
We assume that the 72-letter alphabet is circular, in the sense that character
with index 0 will follow the character with the largest index 71. 

4. (Wednesday, May 2, 8:45 am) Sample files posted
a.out:		master executable
plain.txt:	plain text message
cipher.txt:	cipher text with key = 4
codeBreaker.txt:	the screen print out when try to break cipher.txt
mydictional.txt:	the dictionary file used for code breaker. More words
			will be added for the real dictionary, but the file
			name will remain as mydictional.txt
plain2.txt:	another plain text message
cipher2.txt:	cipher text for plain2.txt

5. (Wednesday, May 2, 9:00 am) word
In plain text, words are separated by characters other than a-z, A-Z, and 0-9.
Or, by any of the 10 punctuation marks.
For example, (Wednesday, May 2, 8:45 am) will be considered as the following
words: Wednesday May 2 8 45 am

6. (Thursday, May 3, 5:15 am) copy input files
The format of the input file (especially the end of file, new lines, spaces,
etc.) is very important for this project. To ensure that you get the correct
input file to start with, use the following command to copy them to your 
account:

	cp /dept/enee/public_html/class/enee114/homework/Proj4/plain.txt .

This will copy file plain.txt to your current directory. Do the same for other
necessary files.

7. (Friday, May 4, 6:40 am) fix in the master program
A update is posted as a_v1.out. It fixes some bug regarding endline characters
in the previous version.

8. (Friday, May 4, 6:45 am) read in the key value from command line
The key value will be read in from the command line as argv[4] as a string.
For example, key 15 will be considered as character 1 followed by character 5.
You can convert it to integer by yourself or use the following statement
	key = atoi(argv[4]);
which turns it to integer.

9. (Monday, May 7, 10:00 am) \n and EOF in the input files
The EOF symbol (you might find it as an invisible '\n' at the end of files) 
is not in our 72-letter alphebat and you can ignore it.
To be more specific, \n in the  middle of text should be encoded/decoded;
EOF symbol (the invisible '\n' at the end of files) should not be 
encoded/decoded as part of the messages.
Anyway, this feature will not cause you more than a couple of points, if any.