Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:2:12: error: expected unqualified-id before numeric constant # define N 500000 ^ user.cpp:24:9: note: in expansion of macro ‘N’ int N,i; ^ user.cpp:25:9: error: ambiguous overload for ‘operator>>’ (operand types are ‘std::ifstream {aka std::basic_ifstream<char>}’ and ‘int’) fin >> N; ^ user.cpp:25:9: note: candidates are: In file included from /usr/local/include/c++/4.8.0/fstream:38:0, from user.cpp:1: /usr/local/include/c++/4.8.0/istream:120:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match> operator>>(__istream_type& (*__pf)(__istream_type&)) ^ /usr/local/include/c++/4.8.0/istream:120:7: note: no known conversion for argument 1 from ‘int’ to ‘std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&) {aka std::basic_istream<char>& (*)(std::basic_istream<char>&)}’ /usr/local/include/c++/4.8.0/istream:124:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>] <near match> operator>>(__ios_type& (*__pf)(__ios_type&)) ^ /usr/local/include/c++/4.8.0/istream:124:7: note: no known conversion for argument 1 from ‘int’ to ‘std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}’ /usr/local/include/c++/4.8.0/istream:131:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match> operator>>(ios_base& (*__pf)(ios_base&)) ^ /usr/local/include/c++/4.8.0/istream:131:7: note: no known conversion for argument 1 from ‘int’ to ‘std::ios_base& (*)(std::ios_base&)’ /usr/local/include/c++/4.8.0/istream:259:7: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>] <near match> operator>>(__streambuf_type* __sb); ^ /usr/local/include/c++/4.8.0/istream:259:7: note: no known conversion for argument 1 from ‘int’ to ‘std::basic_istream<char>::__streambuf_type* {aka std::basic_streambuf<char>*}’ user.cpp:26:10: error: ‘i’ was not declared in this scope for( i = 0 ; i < N ; ++i ) ^ user.cpp:31:10: error: ‘i’ was not declared in this scope for( i = 0 ; i < N ; ++i ) ^