Compilare: user.cpp: In function ‘void get_all_codes(const string&, int, std::vector<long long unsigned int>*)’: user.cpp:18:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k >= codelen - 1) { ^ user.cpp: In function ‘int main()’: user.cpp:53:9: warning: variable ‘indice’ set but not used [-Wunused-but-set-variable] int indice[n]; ^