TOUPPER
Section: C Library Functions (3)
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BSD mandoc
NAME
toupper
- lower case to upper case letter conversion
SYNOPSIS
Fd #include <ctype.h>
Ft int
Fn toupper int c
DESCRIPTION
The
Fn toupper
function converts a lower-case letter to the corresponding
upper-case letter.
RETURN VALUES
If the argument is a lower-case letter, the
Fn toupper
function returns the corresponding upper-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
Fn tolower
function conforms to
St -ansiC .
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUES
-
- SEE ALSO
-
- STANDARDS
-
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Time: 19:41:58 GMT, December 25, 2022