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Exception Handling

• The best remedy is to make sure that all allocated memory is deleted in a destructor.
• If a local pointer variable is unavoidable, you can use the following construct:

  Product* p = NULL;
  try
  {
     p = new Product();
     if (p->read())
     {
        ...
     }
     delete p;
  }
  catch(...)
  {
     delete p;
     throw;
  }
  
  

• The clause catch(...) matches any exception.
• The handle contains the local cleanup, followed by the throw statement without an exception object.
• This rethrows the exception so that the correct handler can process it.

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