Compilare: user.cpp: In function ‘int main()’: user.cpp:14:24: warning: unused variable ‘j’ [-Wunused-variable] int n, x, y, l, i, j, ok=1, aux; ^ user.cpp:14:27: warning: unused variable ‘ok’ [-Wunused-variable] int n, x, y, l, i, j, ok=1, aux; ^