TOLOWER(3)                386BSD Programmer's Manual                TOLOWER(3)

NAME
     tolower - upper case to lower case letter conversion

SYNOPSIS
     #include <ctype.h>

     int
     tolower(int c)

DESCRIPTION
     The tolower() function converts an upper-case letter to the corresponding
     lower-case letter.

RETURN VALUES
     If the argument is an upper-case letter, the tolower() function returns
     the corresponding lower-case letter if there is one; otherwise the
     argument is returned unchanged.

SEE ALSO
     isascii(3),  isalnum(3),  isalpha(3),  iscntrl(3),  isdigit(3),
     isgraph(3),  islower(3),  isprint(3),  ispunct(3),  isspace(3),
     isupper(3),  isxdigit(3),  toascii(3),  toupper(3),  stdio(3) ascii(7)

STANDARDS
     The tolower() function conforms to ANSI C3.159-1989 (``ANSI C'').

BSD Experimental                 June 29, 1991                               1