Compilare: user.cpp: In function ‘void bfs()’: user.cpp:83:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[aux.i][aux.j][aux.dir][aux.viz] < a[ni][nj][ndir][nviz]) ^ user.cpp:83:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[aux.i][aux.j][aux.dir][aux.viz] < a[ni][nj][ndir][nviz]) ^ user.cpp:85:72: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[ni][nj][ndir][nviz] = a[aux.i][aux.j][aux.dir][aux.viz]; ^ user.cpp:85:81: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[ni][nj][ndir][nviz] = a[aux.i][aux.j][aux.dir][aux.viz]; ^ user.cpp:91:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[aux.i][aux.j][aux.dir][aux.viz] + 1 < a[ni][nj][ndir][nviz]) ^ user.cpp:91:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[aux.i][aux.j][aux.dir][aux.viz] + 1 < a[ni][nj][ndir][nviz]) ^ user.cpp:93:72: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[ni][nj][ndir][nviz] = a[aux.i][aux.j][aux.dir][aux.viz] + 1; ^ user.cpp:93:81: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[ni][nj][ndir][nviz] = a[aux.i][aux.j][aux.dir][aux.viz] + 1; ^