Eroare de compilare: user.cpp: In function ‘long long int dec(std::__cxx11::string)’: user.cpp:69:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++){ ~^~~~~~~~~ user.cpp: In function ‘std::vector<std::__cxx11::basic_string<char> > readTree(tNode, std::__cxx11::string)’: user.cpp:87:28: error: no matching function for call to ‘std::vector<std::pair<int, int> >::push_back(std::__cxx11::string&)’ sol.push_back(node->cod); ^ In file included from /usr/include/c++/6/vector:64:0, from user.cpp:3: /usr/include/c++/6/bits/stl_vector.h:914:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>] push_back(const value_type& __x) ^~~~~~~~~ /usr/include/c++/6/bits/stl_vector.h:914:7: note: no known conversion for argument 1 from ‘std::__cxx11::string {aka std::__cxx11::basic_string<char>}’ to ‘const value_type& {aka const std::pair<int, int>&}’ /usr/include/c++/6/bits/stl_vector.h:932:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>] push_back(value_type&& __x) ^~~~~~~~~ /usr/include/c++/6/bits/stl_vector.h:932:7: note: no known conversion for argument 1 from ‘std::__cxx11::string {aka std::__cxx11::basic_string<char>}’ to ‘std::vector<std::pair<int, int> >::value_type&& {aka std::pair<int, int>&&}’ user.cpp:98:11: error: could not convert ‘sol’ from ‘std::vector<std::pair<int, int> >’ to ‘std::vector<std::__cxx11::basic_string<char> >’ return sol; ^~~