Compilare: user.cpp: In function ‘int main()’: user.cpp:40:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < primes.size(); i++) { ^ user.cpp:60:20: warning: ‘where’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << (n - where) * gcd << " "; ^ user.cpp:25:13: warning: ‘gcd’ may be used uninitialized in this function [-Wmaybe-uninitialized] n /= gcd; ^