tolower man page on BSDi
[printable version]
TOLOWER(3) BSD 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 argu-
ment 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 C X3.159-1989 (``ANSI C '').
BSDI BSD/OS June 29, 1991 1
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