Compilare: main.cpp: In function 'int nr0(int)': main.cpp:16:9: warning: unused variable 'nr2' [-Wunused-variable] 16 | { int nr2=0,nr5=0; | ^~~ In file included from /usr/include/c++/12.2.1/istream:39, from /usr/include/c++/12.2.1/sstream:38, from /usr/include/c++/12.2.1/complex:45, from /usr/include/c++/12.2.1/ccomplex:39, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:54, from main.cpp:9: 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:35:24: /usr/include/c++/12.2.1/ostream:202:25: warning: 'poz' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:25:27: note: 'poz' was declared here 25 | long long st=0,dr=p*p,poz,mid; | ^~~