Checks if the given wide character is an uppercase letter, i.e. one of ABCDEFGHIJKLMNOPQRSTUVWXYZ
or any uppercase letter specific to the current locale.
If the value of ch is neither representable as a wchar_t nor equal to the value of the macro WEOF, the behavior is undefined.
[edit] Parameters [edit] Return valueNon-zero value if the wide character is an uppercase letter, zero otherwise.
[edit] NotesISO 30112 specifies which Unicode characters are include in POSIX upper category.
[edit] ExampleOutput:
in the default locale, iswupper(0x53d) = false in Unicode locale, iswupper(0x53d) = true[edit] See also ASCII values characters
isupper
iswupper
\x0
â\x8
\0
â\10
control codes (NUL
, etc.) â 0
0
0
0
0
0
0
0
0
0
0
0
9 \x9
\11
tab (\t
) â 0
0
â 0
â 0
0
0
0
0
0
0
0
0
10â13 \xA
â\xD
\12
â\15
whitespaces (\n
, \v
, \f
, \r
) â 0
0
â 0
0
0
0
0
0
0
0
0
0
14â31 \xE
â\x1F
\16
â\37
control codes â 0
0
0
0
0
0
0
0
0
0
0
0
32 \x20
\40
space 0
â 0
â 0
â 0
0
0
0
0
0
0
0
0
33â47 \x21
â\x2F
\41
â\57
!"#$%&'()*+,-./
0
â 0
0
0
â 0
â 0
0
0
0
0
0
0
48â57 \x30
â\x39
\60
â\71
0123456789
0
â 0
0
0
â 0
0
â 0
0
0
0
â 0
â 0
58â64 \x3A
â\x40
\72
â\100
:;<=>?@
0
â 0
0
0
â 0
â 0
0
0
0
0
0
0
65â70 \x41
â\x46
\101
â\106
ABCDEF
0
â 0
0
0
â 0
0
â 0
â 0
â 0
0
0
â 0
71â90 \x47
â\x5A
\107
â\132
GHIJKLMNOP
QRSTUVWXYZ
0
â 0
0
0
â 0
0
â 0
â 0
â 0
0
0
0
91â96 \x5B
â\x60
\133
â\140
[\]^_`
0
â 0
0
0
â 0
â 0
0
0
0
0
0
0
97â102 \x61
â\x66
\141
â\146
abcdef
0
â 0
0
0
â 0
0
â 0
â 0
0
â 0
0
â 0
103â122 \x67
â\x7A
\147
â\172
ghijklmnop
qrstuvwxyz
0
â 0
0
0
â 0
0
â 0
â 0
0
â 0
0
0
123â126 \x7B
â\x7E
\172
â\176
{|}~
0
â 0
0
0
â 0
â 0
0
0
0
0
0
0
127 \x7F
\177
backspace character (DEL
) â 0
0
0
0
0
0
0
0
0
0
0
0
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