Error Checking C Programming
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Disk Error Checking Program
Unions C - Bit Fields C - Typedef C - Input & Output C - File I/O error checking c drive C - Preprocessors C - Header Files C - Type Casting C - Error Handling C - Recursion C - Variable Arguments C - Memory Management programming error handling C - Command Line Arguments C Programming Resources C - Questions & Answers C - Quick Guide C - Useful Resources C - Discussion Selected Reading Developer's Best Practices Questions and Answers Effective Resume Writing HR Interview Questions Computer Glossary Who is
Programming Error Handling Best Practices
Who C - Error Handling Advertisements Previous Page Next Page As such, C programming does not provide direct support for error handling but being a system programming language, it provides you access at lower level in the form of return values. 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
File Handling In C Programming
error codes defined in
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C Error Handling Best Practices
developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the error handling in c++ Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error handling in C code up https://www.tutorialspoint.com/cprogramming/c_error_handling.htm vote 102 down vote favorite 59 What do you consider "best practice" when it comes to error handling errors in a consistent way in a C library. There are two ways I've been thinking of: Always return error code. A typical function would look like this: MYAPI_ERROR getObjectSize(MYAPIHandle h, int* returnedSize); The always provide an error pointer approach: int getObjectSize(MYAPIHandle h, MYAPI_ERROR* returnedError); When using the http://stackoverflow.com/questions/385975/error-handling-in-c-code first approach it's possible to write code like this where the error handling check is directly placed on the function call: int size; if(getObjectSize(h, &size) != MYAPI_SUCCESS) { // Error handling } Which looks better than the error handling code here. MYAPIError error; int size; size = getObjectSize(h, &error); if(error != MYAPI_SUCCESS) { // Error handling } However, I think using the return value for returning data makes the code more readable, It's obvious that something was written to the size variable in the second example. Do you have any ideas on why I should prefer any of those approaches or perhaps mix them or use something else? I'm not a fan of global error states since it tends to make multi threaded use of the library way more painful. EDIT: C++ specific ideas on this would also be interesting to hear about as long as they are not involving exceptions since it's not an option for me at the moment... c error-handling share|improve this question edited Nov 6 '13 at 19:09 ubershmekel 3,64013145 asked Dec 22 '08 at 10:46 Laserallan 6,71172956 add a comment| 17 Answers 17 active oldest votes up vote 50 down vote acc
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this http://stackoverflow.com/questions/3705436/c-error-checking-function site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up C Error error handling Checking Function up vote 3 down vote favorite For my systems programming class we're doing a lot of programming in C and are required to error check most functions as we are currently learning to program with pthreads. The reason I say this is not really homework, is that it is far above and beyond what is expected for this class. Simply checking each function error checking c individually is more than satisfactory. I just feel this is a time-consuming and messy method and hope for a neater solution. I was wondering if anyone could show me how to write a function that takes any C function as a parameter, followed by all the required parameters for that function, along with a desired return value (in this case the correct one), and performs the following. if(function_name(param1, param2, ...) != desired_return_value) { fprintf(stderr, "program_name: function_name() failed\n"); perror("function_name(): "); } Is this possible? It's hardly required by our course, but it just irks me that virtually ever function I write has to have 4 lines of code to error check it. It makes it bloody hard to read. Even some other suggestions would be good. I'm just trying to increase readability, so if this is totally the wrong direction, some correct direction would be much appreciated. EDIT: This should compile under the gnu99 standard ideally :P EDIT 2: In response to James McNellis: The errors from our functions do not (I believe in this case), need to be handled. Notification only needs to be supplied. We have covered nothing on handlin