Compilare: user.cpp: In function ‘int main()’: user.cpp:8:39: warning: unused variable ‘k’ [-Wunused-variable] int d, n, i, H=0, S=0, D=0, y, x, k=1, l, j, a[10001]; ^ user.cpp:8:47: warning: unused variable ‘j’ [-Wunused-variable] int d, n, i, H=0, S=0, D=0, y, x, k=1, l, j, a[10001]; ^ user.cpp:42:17: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<-x<<" "<<"D"<<'\n'; ^ user.cpp:56:17: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<-y<<" "<<"D"<<'\n'; ^