So, that's the source of the steak and chicken dinner problem I've been reading about!
To get this off to a flying start, pick one program you think is easiest, and make up pseudo code and a skeleton program for it, and post it. Be sure to mention what has you stopped from going on. Look for the logical steps you would make, if you were to solve this without a computer.
Our mind-reading skills are over-rated, I assure you, so the more specific your questions are, the better the answers you'll receive.
Get started ASAP, because programming in C can take longer than you'd think.