Compilare: main.cpp: In function 'int main()': main.cpp:74:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(int i=0;i<v.size();i++) fout<<v[i]<<' '<<v[i]+1<<' '<<1<<'\n'; /// nu conteaza | ~^~~~~~~~~ In file included from /usr/include/c++/12.2.1/bits/char_traits.h:46, from /usr/include/c++/12.2.1/ios:40, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:1: In function 'constexpr decltype (::new(void*(0)) _Tp) std::construct_at(_Tp*, _Args&& ...) [with _Tp = muchie; _Args = {const muchie&}]', inlined from 'static constexpr void std::allocator_traits<std::allocator<_CharT> >::construct(allocator_type&, _Up*, _Args&& ...) [with _Up = muchie; _Args = {const muchie&}; _Tp = muchie]' at /usr/include/c++/12.2.1/bits/alloc_traits.h:518:21, inlined from 'constexpr void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = muchie; _Alloc = std::allocator<muchie>]' at /usr/include/c++/12.2.1/bits/stl_vector.h:1281:30, inlined from 'void citire()' at main.cpp:22:16: /usr/include/c++/12.2.1/bits/stl_construct.h:97:73: warning: 'M' may be used uninitialized [-Wmaybe-uninitialized] 97 | { return ::new((void*)__location) _Tp(std::forward<_Args>(__args)...); } | ^ main.cpp: In function 'void citire()': main.cpp:21:12: note: 'M' declared here 21 | muchie M; | ^