one:	preproc1.C
	g++ -o one preproc1.C

# Expected output
#
# Glug... 
# z starts as 2
# z is now 3
# 3 is odd

two:	preproc1.C
	g++ -o two -DTRIGGER preproc1.C

# Expected output
#
# Glug... Glug... Glug... 
# z starts as 99
# A beautiful day in the neighbourhood: 99
# z is now 99
# Won't you be my neighbour?

three:	preproc1.C
	g++ -o three -DTRIGGER -DTRIGGER2 preproc1.C

# Expected output
#
# Glug... Glug... 
# z starts as 1001
# z is now 2001
# 2001 is odd

clean:
	rm -f *.o a.out one two three