Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:22:14: error: cannot bind ‘std::basic_istream<char>’ lvalue to ‘std::basic_istream<char>&&’ fin>>a>>b; ^ In file included from /usr/include/c++/4.8/iostream:40:0, from user.cpp:1: /usr/include/c++/4.8/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = int [500001]]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:23:17: error: expected primary-expression before ‘]’ token fout<<v[]-v[a-1]<<"\n"; ^ user.cpp:23:24: error: invalid types ‘int [500001][int*]’ for array subscript fout<<v[]-v[a-1]<<"\n"; ^