Error Handling in C++

In C++ editions of /n software libraries, all class methods return an integer value that indicates whether or not the method call succeeded. If a method completes without error, the return value will be 0. All other return codes indicate an error has occured, in which case GetLastError() will contain more information.

Here is a simple example of common error-handling logic in C++:


int ret_code;
ret_code = http1.Get(hostName);
if (ret_code)
{
  printf("Error: %s\n", http1.GetLastError());
}

The above example uses the HTTP class from IPWorks, but all C++ components support the same flow.

Note: The 'getter' and 'setter' methods for class properties do not follow the above convention.

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