Vincent Trouilliez schrieb:
On Sat, 28 Feb 2009 19:09:13 -0700
"Weddington, Eric" <ewedding...@cso.atmel.com> wrote:
So in application code I tend to avoid switch statements for embedded systems,
unless I'm writing throw-away code or the application is trivial.
Oh no ! ;-)
I have only recently got round to using switch statements, to improve
code legibility. In my current/first embedded project, I happen to have
a very long (25 cases, 160 lines long) switch statement.. I dread to
think what it would like if I had to replace it (what else with ?) with
nested if's !
How readable would that be... not to mention that with indentation, 25
levels of nesting would mean the last case would be 3 meters on the far
right... ;-)
Any coding tips to make all this look about readable by human
beings ?! ;-/
You can write
if ()
{}
else if ()
{}
else if ()
{}
...
else
{}
instead of
if ()
{}
else
if ()
{}
else
if ()
{}
...
else
{}
(Optionally with one more level of {} in each but the last else)
In fact, editors like emacs will indent the two sources differently,
i.e. just in the way I indicated, even though there is absolutely no
difference in semantic. And the first complies with coding standards
like gnu and gcc, and maybe even others like misra etc.
Georg-Johann
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