3.257 tolower

Function

Convert a character into its lower case representation.

Header

ctype.h

Declaration

int __fastcall__ tolower (int c);

Description

The function returns the given character converted to lower case. If the given character is not a letter, it is returned unchanged.

Limits

• The function is only available as fastcall function, so it may only be used in presence of a prototype.

Availability

ISO 9899

See also

islower, isupper, toupper

Example

None.