program is running, but purchase hotplate/fumehood doesn't work well - it purchases too little.
Merge branch 'master' of https://github.com/oryband/spl-assignments

* 'master' of https://github.com/oryband/spl-assignments:
  removed obsolete file, shouldn't be there.
Reward calculation is now using int again instead of floats.
Fixed all remaining warnings.
Program is working, and on time.
created test files for short, long and keren's tests.
That's it - program is running on time, earns more than other students (according to comparison table), and everything is fine; Only left to beautify code. HURRAH