Compilare: user.cpp: In function ‘int main()’: user.cpp:30:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size()-1;++i) ^ user.cpp:46:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size()-2;++i) ^ user.cpp:58:67: warning: ‘indice_max_2’ may be used uninitialized in this function [-Wmaybe-uninitialized] sum = sum - v[indice_max_1] - v[indice_max_1+1] - v[indice_max_2] - v[indice_max_2+1]; ^ user.cpp:58:29: warning: ‘indice_max_1’ may be used uninitialized in this function [-Wmaybe-uninitialized] sum = sum - v[indice_max_1] - v[indice_max_1+1] - v[indice_max_2] - v[indice_max_2+1]; ^