Eroare de compilare: user.cpp: In function ‘void citire()’: user.cpp:15: warning: statement has no effect user.cpp: In function ‘int extract()’: user.cpp:27: error: ‘class std::queue<int, std::deque<int, std::allocator<int> > >’ has no member named ‘emptu’ user.cpp:27: error: expected ‘)’ before ‘{’ token user.cpp:42: error: expected primary-expression before ‘}’ token user.cpp:42: error: expected ‘;’ before ‘}’ token