NAME
isupper —
upper-case character test
SYNOPSIS
#include
<ctype.h>
int
isupper(int
c);;
DESCRIPTION
Theisupper()
function tests for any upper-case letter. In the ASCII character set, this
includes the following characters:
| 101 ``A'' 102\``B'' 103\``C'' 104\``D'' 105\``E'' |
| 106 ``F'' 107\``G'' 110\``H'' 111\``I'' 112\``J'' |
| 113 ``K'' 114\``L'' 115\``M'' 116\``N'' 117\``O'' |
| 120 ``P'' 121\``Q'' 122\``R'' 123\``S'' 124\``T'' |
| 125 ``U'' 126\``V'' 127\``W'' 130\``X'' 131\``Y'' |
| 132 ``Z'' |
RETURN VALUES
The isupper() function returns zero if the
character tests false and returns non-zero if the character tests true.
SEE ALSO
STANDARDS
The isupper function conforms to ANSI X3.159-1989 (“ANSI C89”).