Compilare: user.cpp: In function ‘int nr_prim(int)’: user.cpp:25:12: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] return s; ^ user.cpp: In function ‘int main()’: user.cpp:35:32: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<nr_prim(k+1)*nr_prim(k+1)<<'\n'; ^ user.cpp:35:32: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized]