Compilare: main.cpp: In function 'int main()': main.cpp:37:29: warning: array subscript has type 'char' [-Wchar-subscripts] frst.dir = ff[ frst.dir ]; ^ main.cpp:38:33: warning: array subscript has type 'char' [-Wchar-subscripts] d[frst.ii][frst.jj][frst.dir] = 0; ^ main.cpp:43:28: warning: array subscript has type 'char' [-Wchar-subscripts] a[i][j] = ff[ch]; ^ main.cpp:50:41: warning: array subscript has type 'char' [-Wchar-subscripts] if(d[nod.ii][nod.jj][nod.dir] != t){ ^ main.cpp:63:55: warning: array subscript has type 'char' [-Wchar-subscripts] if(d[vecin.ii][vecin.jj][vecin.dir] > val){ ^ main.cpp:64:56: warning: array subscript has type 'char' [-Wchar-subscripts] d[vecin.ii][vecin.jj][vecin.dir] = val; ^