OneChar Literal
A *OneChar literal specifies a *OneChar constant.
Remarks
The format of the literal value is 'c' where c is any single character. *OneChar literals are distinguished from other character-type literals by the single character surrounded by two single-quote characters.
Note the difference between literals
'c'and"c". The former is of type *OneChar, while the latter is of type *Char (or *String).
Examples
'w'
'4'