def main():
    errors = []
    errors.extend(check_header_files('preprocess'))
    errors.extend(check_header_files('search'))
    for error in errors:
        print(error)
    if errors:
        sys.exit(1)
def main():
    errors = []
    errors.extend(check_header_files('preprocess'))
    errors.extend(check_header_files('search'))
    for error in errors:
        print(error)
    if errors:
        sys.exit(1)