Compilare: user.cpp: In function ‘int main()’: user.cpp:9:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("produs4.in", "r", stdin); ^ user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("produs4.out", "r", stdout); ^ user.cpp:110:62: warning: ‘second_best_min’ may be used uninitialized in this function [-Wmaybe-uninitialized] prod_with_two_negatives *= (int long long)(second_best_min); ^ user.cpp:106:61: warning: ‘third_best_max’ may be used uninitialized in this function [-Wmaybe-uninitialized] prod_with_all_positives *= (int long long)(third_best_max); ^ user.cpp:109:61: warning: ‘first_best_min’ may be used uninitialized in this function [-Wmaybe-uninitialized] prod_with_two_negatives *= (int long long)(first_best_min); ^ user.cpp:104:73: warning: ‘first_best_max’ may be used uninitialized in this function [-Wmaybe-uninitialized] int long long prod_with_all_positives = (int long long)(first_best_max); ^ user.cpp:105:62: warning: ‘second_best_max’ may be used uninitialized in this function [-Wmaybe-uninitialized] prod_with_all_positives *= (int long long)(second_best_max); ^