I plan to use projeval when I evaluate your project (since it nicely automates so many important tests I'd otherwise have to do by hand), so yes: it is rather important.

Be sure you are conforming to project specifications! All things that need to output to STDOUT vs. STDERR.

projeval test data is located under /usr/local/etc/eval (additional directories for course desig and project therein).

Eventually there will be directory names by the number of each test, and inside will be four files:

• args.txt: additional arguments appending to the command-line when running your program
• desc.txt: description of the test (likely what you see on projeval output)
• in.txt: program input sent into your program at runtime (STDIN redirection)
• out.txt: program output that is expected (when program is run with args and input sent in; usually the very last line of output)