20kloc of C sounds like a lot and 4 days like too little. As a comparsion at work we developed a drive-by-wire system for handicaped car driver. This Software has around 22kloc of mostly C and some configuration/make files.
LOC is really pretty meaningless, it all depends on how the program was written. If it was a "top to bottom" program with no loops or subroutines (this is the style often seen in COBOL code for example) it could have been a lot of very repetitive code.
What i wanted to say is that 20kloc is a lot even for C. (Specially for "only" generating the parameters.
Diggum sad that it was more like 2kloc which sounds resonable.
