Compilare: main.cpp: In function 'int main()': main.cpp:13:9: warning: unused variable 'c' [-Wunused-variable] 13 | int c = 0; | ^ In file included from /usr/include/c++/12.2.1/bits/exception_ptr.h:43, from /usr/include/c++/12.2.1/exception:168, from /usr/include/c++/12.2.1/ios:39, from /usr/include/c++/12.2.1/ostream:38, from /usr/include/c++/12.2.1/iostream:39, from main.cpp:1: In function 'constexpr std::_Require<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&, _Tp&) [with _Tp = char]', inlined from 'int main()' at main.cpp:26:9: /usr/include/c++/12.2.1/bits/move.h:205:11: warning: 'posq' may be used uninitialized [-Wmaybe-uninitialized] 205 | __a = _GLIBCXX_MOVE(__b); | ^ main.cpp: In function 'int main()': main.cpp:15:12: note: 'posq' was declared here 15 | int q, posq; | ^~~~