"raise" and "exception" ...

To C++ Experts,

   How is "raise" to do with "exceptions" ? can I have an example ?
 thanks.

 
LVL 1
meow00Asked:
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.

DexstarCommented:
meow00:

> How is "raise" to do with "exceptions" ? can I have an example ?

In C++, you don't "raise" exceptions.  You "throw" them.

     void SomeFunction()
     {
          try
          {
               int i = 5;

               if ( i < 5 )
                    throw i;
          }
          catch( int n )
          {
               cout << "Caught int Exception: " << n << endl;
          }
     }

Does that make it more clear?

Hope that helps,
Dex*
0
meow00Author Commented:
I see .... so what does raise do :
In the book (C++ in a nutshell): "The raise function sends a signal to the running program." But I don't really understand what it means ......
thanks.
0
DexstarCommented:
meow00:

> I see .... so what does raise do :
> In the book (C++ in a nutshell): "The raise function sends a signal to the
> running program." But I don't really understand what it means ......

I've been programming in C/C++ since 1992 or so, and I've never used that function.  So, I looked it up and found this:
     http://www.qnx.com/developer/docs/qnx_6.1_docs/neutrino/lib_ref/r/raise.html

Which will give you a sample of its usage.
But, in general, that is the "old sk00l" way of doing it.  With C++, you have exceptions, and so the signal()/raise() functions are pretty much obsolete.

Dex*
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
DexstarCommented:
meow00:

I'm glad that you accept my answers, but I'm sure it isn't necessary to split the points between my 2 answers, since they all go to the same person.  You should save that for when you want to split the points between two different people.  :)

Dex*
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
C++

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.