Печать кода с подсветкой синтаксиса?

Попробуйте следующее:

TWTRLogInButton *logInButton = [TWTRLogInButton buttonWithLogInCompletion:^(TWTRSession *session, NSError *error) {
    // play with Twitter session
    if (session) {
        NSLog(@"Twitter signed in as -> name = %@ id = %@ ", [session userName],[session userID]);

        /* Get user info */
        [[[Twitter sharedInstance] APIClient] loadUserWithID:[session userID]
                                                  completion:^(TWTRUser *user,
                                                               NSError *error)
        {
            // handle the response or error
            if (![error isEqual:nil]) {
                NSLog(@"Twitter info   -> user = %@ ",user);
                NSString *urlString = [[NSString alloc]initWithString:user.profileImageLargeURL];
                NSURL *url = [[NSURL alloc]initWithString:urlString];
                NSData *pullTwitterPP = [[NSData alloc]initWithContentsOfURL:url];

                UIImage *profImage = [UIImage imageWithData:pullTwitterPP];


            } else {
                NSLog(@"Twitter error getting profile : %@", [error localizedDescription]);
            }
        }];

    } else {
        NSLog(@"Twitter error signed in : %@", [error localizedDescription]);
    }
}];
logInButton.center = self.view.center;
[self.view addSubview:logInButton];