Compilare: user.cpp: In function ‘int main()’: user.cpp:28:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < resturi.size(); i++) ^ user.cpp:17:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cifre4.out", "w", stdout); ^