Re: Lab#4

Ed Casas (edc@ece.ubc.ca) Sat, 4 Nov 2000 12:12:18 -0800 

Date: Sat, 4 Nov 2000 12:12:18 -0800
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: Lab#4



> I would like to know why 'else' loops don't work in the lab.
> Ever time I implement one in my code, the 'else' loop is the
> only loop that is run, whether it should be or not???

If only the 'else' part is executed then the if's controlling
expression must always be evaluating to zero.

If you can't figure out why the expression evaluates to zero you
can write a simple program that evaluates the expression and
compile/run it with Turbo C.

If you're uncertain about the values of switch inputs you can
write a simple program that copies switch inputs to LED outputs.

Remember to mask out bits that are not hooked up to switches
since you can't predict what their values will be.

-- 
Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592