Content-type: text/html Man page of tolower

tolower

Section: Standard C Library Functions (3C)
Updated: 14 Aug 2002
Index Return to Main Contents
 

NAME

tolower - transliterate upper-case characters to lower-case  

SYNOPSIS

#include <ctype.h> 

int tolower(int c);  

DESCRIPTION

The tolower() function has as a domain a type int, the value of which is representable as an unsigned char or the value of EOF. If the argument has any other value, the argument is returned unchanged. If the argument of tolower() represents an upper-case letter, and there exists a corresponding lower-case letter (as defined by character type information in the program locale category LC_CTYPE), the result is the corresponding lower-case letter. All other arguments in the domain are returned unchanged.  

RETURN VALUES

On successful completion, tolower() returns the lower-case letter corresponding to the argument passed. Otherwise, it returns the argument unchanged.  

ERRORS

No errors are defined.  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
CSIEnabled
Interface StabilityStandard
MT-LevelMT-Safe

 

SEE ALSO

_tolower(3C), setlocale(3C), attributes(5), standards(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
ATTRIBUTES
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:37:21 GMT, October 02, 2010