redirecting C error messages

[utzoo!decvax!harpo!npoiv!npois!houxm!houxa!houxi!houxz!hocda!spanky!rs]

How do I redirect error messages given by the C compiler to a file?
I am unsuccessful when I try to pipe them somewhere as they just
come out to my terminal!
				Thanks,
				Bob Switzer
				ph: 201-949-5133
				3G406 BTL
				Holmdel, NJ