Compilare: user.cpp: In function ‘int main()’: user.cpp:87:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] ni=i+d[x][0]; ^ user.cpp:88:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] nj=j+d[x][1]; ^ user.cpp:102:19: warning: ‘y2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<b[x2][y2]-1<<endl; ^ user.cpp:102:19: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized]