====== tolower ======
{{tag>character}}
''int tolower(int c)''

===== Description =====
Returns the lowercase version of c. If c is not an ASCII letter, it is returned unchanged.

To change the case of a whole string, use [[StrToLower]].

===== Examples =====
<code>
tolower('A') -> 'a'
tolower('a') -> 'a'
tolower('/') -> '/' // not a letter
tolower('Ä') -> 'Ä' // non-ASCII character
</code>

===== See also =====
[[toupper]]