Compilare: user.cpp: In function ‘void produs(std::deque<int, std::allocator<int> >&, int)’: user.cpp:48: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void scadere(std::deque<int, std::allocator<int> >&, std::deque<int, std::allocator<int> >)’: user.cpp:66: warning: comparison between signed and unsigned integer expressions user.cpp:75: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void adauga(std::deque<int, std::allocator<int> >&, int)’: user.cpp:92: warning: comparison between signed and unsigned integer expressions