Compilare: main.cpp: In function 'long long int fibo(int)': main.cpp:14:33: warning: 'c' may be used uninitialized [-Wmaybe-uninitialized] 14 | long long a = 1, b = 2, c; | ^ In file included from /usr/include/c++/12.2.1/iostream:39, 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:31:8: /usr/include/c++/12.2.1/ostream:202:25: warning: 'c' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:14:33: note: 'c' was declared here 14 | long long a = 1, b = 2, c; | ^