Compilare: In file included from /usr/include/c++/12.2.1/istream:39, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:1: In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]', inlined from 'int main()' at main.cpp:36:13: /usr/include/c++/12.2.1/ostream:202:25: warning: 'rez' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:13:20: note: 'rez' was declared here 13 | long long sum, rez; | ^~~ main.cpp:32:17: warning: 'sum' may be used uninitialized [-Wmaybe-uninitialized] 32 | sum += x; | ~~~~^~~~ main.cpp:13:15: note: 'sum' was declared here 13 | long long sum, rez; | ^~~