Compilare: user.cpp: In function ‘int main()’: user.cpp:85:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vila.in", "r", stdin); ^ user.cpp:86:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vila.out", "w", stdout); ^ user.cpp:153:29: warning: ‘coloana’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << linie << " " << coloana << " " << S2_max; ^ user.cpp:153:13: warning: ‘linie’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << linie << " " << coloana << " " << S2_max; ^