The default character limit for identifiers in our compiler is 31 characters. The character limit can be changed up to 254 characters as an option. To set the number of characters, check the Change maximum identifier length (default 31) check box in [C / C ++ Build]> [Settings]> [Tool Settings] tab> [Compiler]> [General] in the [Properties] dialog of LEXIDE-U16. Then set the number of characters you want to change in the Length(decimal) field.