new file:   2/cleaner.c
	new file:   2/prog.c
	new file:   2/prog.h
	new file:   5/defs.h
	new file:   5/init.h
	new file:   5/op.h
	new file:   5/prog.c
	new file:   5/struct.h
Merge branch 'master' of https://github.com/washington12/Lunev-seminars
Merge branch 'master' of https://github.com/washington12/Lunev-seminars