C++ Error Handling — Good Sources of Example Code?

Question

Just about every piece of example code everywhere omits error handling (because it \"confuses the issue\" that the example code is addressing). My programming knowledge come

Answer 1

With C++, you should end up with less visible error handling code anyway, because you can leave a lot of the heavy lifting to Exceptions.

In my opinion the most basic rule with exceptions (and one most commonly broken) is this. Don't try to catch exceptions unless you have a specific plan to handle them.

With exceptions, you don't have to worry about error codes returned from functions, because well designed functions will just throw exceptions instead.

In C a typical error handling scenario looks like this:

int DoA() 
{
 if (location == hellInAHandcart)
  return ERROR;
 else
  RETURN OK;
}

int DoB()
{
  int err = DoA();
  if (err != OK)
     return err;
  else
     return DoSomethingElse1();
}

int DoC()
{
  int err = DoB();
  if (err != OK)
     //Handle My error here in whatever way...
}

While in C++...

void DoA() 
{
 if (location == hellInAHandcart)
  throw Exception("Gone To Hell in a Handcart");
}

void DoB()
{
  DoA();
  DoSomethingElse1();
}

void DoC()
{
  try
  {
    DoB();
  }
  catch (Exception &E)
  {
    // Handle My error here in whatever way...
  }
}