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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 comes primarily from books and web sites, and you seldom see any error handling in use at all there, let alone good stuff.
Where are some places to see good examples of C++ error handling code? Specific books, specific open-source projects (preferably with the files and functions to look at), and specific web pages or sites will all be gratefully accepted.
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Most of the C or even Unix function calls return -1 or NULL in case of any error and set an error code errno. It is set as a global variable and indicates an error occurred during any function call. You can find various error codes defined in <error. h> header file.
A good error handler will log errors so they can be reviewed and analyzed. It will also provide the operator with a recall function to open the error log file and display errors. In addition, a good error handler logs all the errors, not just the ones that caused the error resolving to occur.
The C programming language does not support exception handling nor error handling. It is an additional feature offered by C. In spite of the absence of this feature, there are certain ways to implement error handling in C. Generally, in case of an error, most of the functions either return a null value or -1.
Types or Sources of Error – There are three types of error: logic, run-time and compile-time error: Logic errors occur when programs operate incorrectly but do not terminate abnormally (or crash).
Herb Sutter's and Andrei Alexandrescu's book C++ Coding Standards comes with a whole chapter on Error Handling and Exceptions including
Every topic also includes an example and I found it to be a very valuable resource.
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