Compilare: user.cpp: In function ‘int main()’: user.cpp:79:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<V.size()) ~^~~~~~~~~ user.cpp:91:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = poz + 1; i<V.size(); i++) ~^~~~~~~~~ user.cpp:78:13: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] int poz; ^~~