How can we prevent files/Folder from being backed up to iCloud and iTunes?

 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);

    if ([paths count] > 0)

    {

        NSString *documentsDirectory = [paths objectAtIndex:0];

        NSString *NineveshDict=[NSString stringWithFormat:@"%@/YourDir/",documentsDirectory];

        [self addSkipBackupAttributeToItemAtURL:[NSURL fileURLWithPath:NineveshDict isDirectory:YES]];

        

    }

-(BOOL)addSkipBackupAttributeToItemAtURL:(NSURL *)URL

{

    if (&NSURLIsExcludedFromBackupKey == nil) { // iOS <= 5.0.1

        const char* filePath = [[URL path] fileSystemRepresentation];

        const char* attrName = "com.apple.MobileBackup";

        u_int8_t attrValue = 1;

        int result = setxattr(filePath, attrName, &attrValue, sizeof(attrValue), 0, 0); return result == 0;

    } else { // iOS >= 5.1

        NSError *error = nil;

        BOOL success = [URL setResourceValue: [NSNumber numberWithBool: YES] forKey: NSURLIsExcludedFromBackupKey error: &error];

        if(!success){

            NSLog(@"Error excluding %@ from backup %@", [URL lastPathComponent], error);

        }

        return success;

    }

}