1) Pick one of these at random.
2) Assign a person who knows nothing about programming to write it in C.
3) See how long it takes.
Also 4) the person you're assigning to the job is a third grader.
Why does it need to be C?
Why not python or javascript?
Feel free to run the experiment. No matter what text-based language you use, it's going to take a helluva lot longer than Scratch. That is the actual point here.