Compilare: user.cpp: In function ‘int main()’: user.cpp:29:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i<stanga.size()/2; ++i) ^ user.cpp:31:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i<dreapta.size()/2; ++i) ^ user.cpp:38:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = stanga.size()/2; i<stanga.size(); ++i) ^ user.cpp:40:59: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = dreapta.size()/2; i<dreapta.size(); ++i) ^