10 - compiles
5 - input and output file included and correspond to each other
5 - input file is a good set of test cases that exercise a good portion of the code (all?)
5 - correctly handles argc and argv
15 - romanToArabic function
15 - arabicToRoman function
15 - file input and output code (including error if input does not exist etc)
20 - correct output on our test cases
http://people.clarkson.edu/~jmatthew/cs141/assignments/prog3_input.txt
http://people.clarkson.edu/~jmatthew/cs141/assignments/prog3_output.txt
Consider other automated test cases? If you use others could you send them to me.
You could also modify this script to add an automated testing option
/afs/cu/class/cs141/students/students.sh

5 - errors for invalid input 
5 - STYLE - other comments where appropriate (e.g. head of file, to clarify any tricky code), clear, meaningful variable names (I've been recommending camel case
such as numCorrect, etc), indentation/layout of code readable and regular

Extra credit possibilities (please record extra credit in a separate
column)
10 - handles much larger numbers with lines over roman numerals - for that 
would need more than just a string 
? - other things that really stand out in what they did ( try to give positive feedback too :-))