Compilare: user.cpp: In function ‘void afisare()’: user.cpp:96:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < stiva.size(); i++) ^ user.cpp:97:59: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] printf("%llf %llf\n", v[stiva[i]].x, v[stiva[i]].y); ^ user.cpp:97:59: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=]