Compilare: user.cpp: In function ‘int main()’: user.cpp:9:18: warning: unused variable ‘a’ [-Wunused-variable] int n, s, d, a = 1; ^ user.cpp:26:40: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << best << " " << s << " " << d; ^ user.cpp:26:27: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << best << " " << s << " " << d; ^