Xcode 5 [NSString writeToFile] without absolute path - objective-c

Question

I've checked out a few other posts about this topic, but I am still left with some doubt on whether or not [NSString writeToFile] is writing to the relative path.
NSError *error = nil;
BOOL success = [str writeToFile:#"someFile.txt"
atomically:YES
encoding:NSUTF8StringEncoding
error:&error];
NSString *status = success ? #"Success" : #"Failure";
if(success){
NSLog(#"Done Writing: %#",status);
}
else{
NSLog(#"Done Writing: %#",status);
NSLog(#"Error: %#",[error localizedDescription]);
}
writeToFile works when given the path to a certain folder and by NSLogging the error, I can see what kind of error occurs. However, when running the above code, no error occurs and after having done a thorough search, I think I can safely say that a file was never created. What's going on behind the scenes?

Answer 1

Well it's certainly working, which you confirm yourself as your code traps and reports errors very nicely. Your only issue is that you don't know where the file is being written to, and in this case, as no path has been specified it will be to the current working directory, which is a concept in pretty much all operating systems (even Windows!).
I must admit that I don't know what the default current working directory is under iOS, but you can find out yourself with:
NSString *cwd = [[NSFileManager defaultManager] currentDirectoryPath];
NSLog(#"cwd='%#'", cwd);