Compilare: user.cpp: In function ‘void lee()’: user.cpp:47:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] cost[x0][y0][convert[dir_init]] = wait(convert[dir_init], convert[mdir[x1][y1]]); ^ user.cpp:47:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] cost[x0][y0][convert[dir_init]] = wait(convert[dir_init], convert[mdir[x1][y1]]); ^ user.cpp:47:83: warning: array subscript has type ‘char’ [-Wchar-subscripts] cost[x0][y0][convert[dir_init]] = wait(convert[dir_init], convert[mdir[x1][y1]]); ^ user.cpp:48:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] q.push({x0, y0, convert[dir_init]}); ^ user.cpp:64:98: warning: array subscript has type ‘char’ [-Wchar-subscripts] int add = 1 + wait(i, (cost [pres.y][pres.x][pres.dir] + convert [mdir [nou.y][nou.x]]+1)%4); ^