Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:14:20: error: cannot bind ‘std::basic_istream<char>’ lvalue to ‘std::basic_istream<char>&&’ in>>a[j]; ^ In file included from /usr/include/c++/4.8/fstream:38:0, 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 [305]]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:8:11: warning: unused variable ‘i’ [-Wunused-variable] int n,i,j; ^ user.cpp:8:13: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j; ^