Eroare de compilare: user.cpp:77:2: warning: no newline at end of file user.cpp: In function 'void back(int)': user.cpp:26: error: 'ostream_iterator' was not declared in this scope user.cpp:26: error: expected primary-expression before '>' token user.cpp: In function 'int main()': user.cpp:73: error: 'istream_iterator' was not declared in this scope user.cpp:73: error: expected primary-expression before '>' token user.cpp:73: error: expected primary-expression before '>' token user.cpp:73: error: expected primary-expression before ')' token