Learning C# - OverFlowChecker?

Im reading Beginning Visual C# and in a section on Type Conversions we are introduced to "Overflow Checking". Pretty cool, but the author goes on to illustrate how Overflow Checking can be configured at the project level. This book - I later found out - is a bit old and references an older version than i'm using (Visual Studio 2K5).  

Now for the questions...
1. Overflow Checking seems to be a good idea, so should it ALWAYS be used ...by default?
2. If not, why not?
3. If so, how (in Visual Studio 2k5) can this be set up (again my book navigates through options I dont seem to have)

thanks,
sleeper
the_sleeperAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

stanscott2Commented:
1)  NO
2)  There's a performance penalty, so it should only be turned on during Debug/testing
     There are some algorithms that need to ignore overflows, not trap them.  An example would be a checksum, as well as some random and encryption algorithm.  In other words, these rely on arithemetic being done in modulus 2 ^ 32, where the high bits are just ignored.

You should also be aware that it's only done on integer arithmetic; it doesn't work for floats, decimals, etc.  Also, a lot of people don't know that division by zero does NOT produce an overflow error; this always throws a DivideByZeroException.

Also, you can always use the "checked" and "unchecked" keywords where you definitely want to trap or ignore this.   You'll have much more control this way.

For VS 2005, you select the global option this way:

With a project selected in Solution Explorer, on the Project menu.
click Properties.

Click the Compile tab.

Click the Advanced Compile Options button.

In the Advanced Compiler Settings dialog box, there is a Remove integer
overflow checks check box.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
the_sleeperAuthor Commented:
Dude...Excellent Answer!
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
.NET Programming

From novice to tech pro — start learning today.