#includeint is_palindromic(int num){ char _old = num; char _new = 0; while (num) { _new = _new * 10 + (num % 10); num = num / 10; } if (_new == _old) { return 1; } else { return 0; }}int main(){ int num = 0; scanf("%d", &num); int ret = is_palindromic(num); if (ret == 1) { printf("%d 是回文数\n", num); } else { printf("%d 不是回文数\n", num); } system("pause"); return 0;}