File functions

Does anyone know if this is a file function that allows me to check for the existence of a file before I try to open it?
Thanks

I was afraid that you were going to say that.
There must be some other return codes in errno.h that I can also use, I will just have to trawl through that.
Thanks

>>There must be some other return codes in errno.h that I can also use
Use for what exactly? You can get formatted error messages with strerror().

If you're after more control than fopen() can provide, you'll have to use an compiler specific function, like stat() , which is detailed in the unix FAQ

For determining the failure reason and returning a more meaningful message to the log file. I havent come across strerror() before, but looking at the man page it looks like it will do what I want. If I use the strerror function inside the fprintf function it should return the error message string to the log file, as:

fprintf(OUT_FILE, "Error: Error No: %i, Error message: %s\n", errno, strerror(errno));

Thanks v.helpful
Peter

If you're doing that, you might find these functions useful too (if you want to make your log writing code more friendly)

Code:

---

void LogMessage(char *fmt, ...)
{
    va_list arglist;
    va_start(arglist, fmt);
    vfprintf(stderr, fmt, arglist);
    va_end( arglist );
}

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