new file:   ex10_36.cc
	new file:   ex10_37.cc
	new file:   ex10_29.cc
	new file:   ex10_29.txt
	new file:   ex10_31.cc
	new file:   ex10_30.cc
	new file:   ex10_33.cc
	new file:   ex10_33.txt
	new file:   ex10_33_even.txt
	new file:   ex10_33_odd.txt