Compilare: user.cpp: In function ‘int fill(int, int)’: user.cpp:23:12: warning: unused variable ‘cnt’ [-Wunused-variable] int k, cnt, flag; ^ user.cpp:23:17: warning: unused variable ‘flag’ [-Wunused-variable] int k, cnt, flag; ^ user.cpp: In function ‘int main()’: user.cpp:51:25: warning: unused variable ‘k’ [-Wunused-variable] int i, j, nq, x, y, k, newx, newy; ^ user.cpp:51:28: warning: unused variable ‘newx’ [-Wunused-variable] int i, j, nq, x, y, k, newx, newy; ^ user.cpp:51:34: warning: unused variable ‘newy’ [-Wunused-variable] int i, j, nq, x, y, k, newx, newy; ^