Compilare: user.c: In function ‘OK’: user.c:13:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[i][j][k]) ^ user.c:13:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:13:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c: In function ‘Lee’: user.c:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[is][js][ks]=1+a[i][j][k]; ^ user.c:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c: In function ‘back’: user.c:46:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(a[i+det[d]][j+dlin[d]][k+dcol[d]]!=a[i][j][k]-1) ^ user.c:46:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:46:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c: In function ‘main’: user.c:58:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%hd%d%hd%hd%hd%hd%hd%hd",&n,&m,&k1,&l1,&c1,&k2,&l2,&c2); ^ user.c:62:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&x,&y,&z); ^