Compilare: user.cpp: In function ‘void eratostene(int)’: user.cpp:30:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(K <= Ciur.size() && poz == -1) poz = A.size(); ^ user.cpp: In function ‘int main()’: user.cpp:56:10: warning: ‘sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] g << sol << '\n'; ^