Solution to Exercise 2

q = 0;		0 q
q = q + 3;		3 q
	OUTPUT: q = 3
q = q * q;		9 q
	OUTPUT: q = 9
word = "foo";		9 q	"foo" word
word = word + "-" + word;		9 q	"foo-foo" word
	OUTPUT: word = foo-foo