factura.items = malloc(sizeof(t_Item)*factura.cant_items);
fread(factura.items, factura.cant_items, sizeof(t_Item), fp);
fread(&len, 1, sizeof(int), fp);
factura.nota = malloc(len*sizeof(char));
fread(factura.nota, 1, len, fp);
factura.items = malloc(sizeof(t_Item)*factura.cant_items);
fread(factura.items, factura.cant_items, sizeof(t_Item), fp);
fread(&len, 1, sizeof(int), fp);
factura.nota = malloc(len*sizeof(char));
fread(factura.nota, 1, len, fp);