Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:42:35: error: no matching function for call to ‘std::basic_ifstream<char>::basic_ifstream(const char [7], const char [2], _IO_FILE*&)’ ifstream cin("inv.in", "r", stdin); ^ In file included from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:70:0, from user.cpp:1: /usr/include/c++/6/fstream:521:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(std::basic_ifstream<_CharT, _Traits>&&) [with _CharT = char; _Traits = std::char_traits<char>] basic_ifstream(basic_ifstream&& __rhs) ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:521:7: note: candidate expects 1 argument, 3 provided /usr/include/c++/6/fstream:511:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const string&, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::__cxx11::string = std::__cxx11::basic_string<char>; std::ios_base::openmode = std::_Ios_Openmode] basic_ifstream(const std::string& __s, ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:511:7: note: candidate expects 2 arguments, 3 provided /usr/include/c++/6/fstream:495:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode] basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in) ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:495:7: note: candidate expects 2 arguments, 3 provided /usr/include/c++/6/fstream:481:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream() [with _CharT = char; _Traits = std::char_traits<char>] basic_ifstream() : __istream_type(), _M_filebuf() ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:481:7: note: candidate expects 0 arguments, 3 provided user.cpp:43:38: error: no matching function for call to ‘std::basic_ofstream<char>::basic_ofstream(const char [8], const char [2], _IO_FILE*&)’ ofstream cout("inv.out", "w", stdout); ^ In file included from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:70:0, from user.cpp:1: /usr/include/c++/6/fstream:725:7: note: candidate: std::basic_ofstream<_CharT, _Traits>::basic_ofstream(std::basic_ofstream<_CharT, _Traits>&&) [with _CharT = char; _Traits = std::char_traits<char>] basic_ofstream(basic_ofstream&& __rhs) ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:725:7: note: candidate expects 1 argument, 3 provided /usr/include/c++/6/fstream:715:7: note: candidate: std::basic_ofstream<_CharT, _Traits>::basic_ofstream(const string&, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::__cxx11::string = std::__cxx11::basic_string<char>; std::ios_base::openmode = std::_Ios_Openmode] basic_ofstream(const std::string& __s, ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:715:7: note: candidate expects 2 arguments, 3 provided /usr/include/c++/6/fstream:697:7: note: candidate: std::basic_ofstream<_CharT, _Traits>::basic_ofstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode] basic_ofstream(const char* __s, ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:697:7: note: candidate expects 2 arguments, 3 provided /usr/include/c++/6/fstream:682:7: note: candidate: std::basic_ofstream<_CharT, _Traits>::basic_ofstream() [with _CharT = char; _Traits = std::char_traits<char>] basic_ofstream(): __ostream_type(), _M_filebuf() ^~~~~~~~~~~~~~ /usr/include/c++/6/fstream:682:7: note: candidate expects 0 arguments, 3 provided