Re: Basic question on exception handling in C++

From:

ricecake@gehennom.invalid (Marcus Kwok)

Newsgroups:

comp.lang.c++,comp.sources.d

Date:

Tue, 12 Jun 2007 17:45:32 +0000 (UTC)

Message-ID:

<f4mm3r$6v5$3@news-int.gatech.edu>

In comp.lang.c++ Erik Wikstr?m <eriwik@student.chalmers.se> wrote:

On 12 Juni, 15:04, masood.iq...@lycos.com wrote:

////// Code snippet begin /////
bool noException = true;

try
{
  // some business logic operation}

catch(std::exception& xcptn)
{
  noException = false;
  cerr << "Exception: " << xcptn.what() << " at " << __FILE__ << ","
<< __LINE__ << endl;
  cerr << "Ignoring business logic operation\n";}

catch(...)
{
  noException = false;
  cerr << "Unrecognized exception at " << __FILE__ << "," << __LINE__
<< endl;
  cerr << "Ignoring business logic operation\n";

}

Seems good to me. If you wish you can put the business logic operation
within the try-block, after the thing that might throw, since no more
statements will be executed in the try block if an exception is
thrown.

One thing that I noticed is that your (the OP's) cerr output will always
output the same line number in the message, that is, the line number of
the cerr output statement. If you want to really see where the
exception occured, you need to encode it into the exception somehow at
the throw point.

--
Marcus Kwok
Replace 'invalid' with 'net' to reply