名前空間
変種
操作

isdigit

提供: cppreference.com
< c‎ | string‎ | byte

 
 
 
NULL終端バイト文字列
機能します
Original:
Functions
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文字操作
Original:
Character manipulation
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数値形式への変換
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Conversions to numeric formats
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文字列操作
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String manipulation
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strcpy
strncpy
strcat
strncat
strxfrm
文字列の検査
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String examination
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メモリ操作
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Memory manipulation
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memchr
memcmp
memset
memcpy
memmove
その他
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Miscellaneous
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strerror
 
Defined in header <ctype.h>
int isdigit( int ch );
与えられた文字かどうかをチェックするには、数字(0123456789)です.
Original:
Checks if the given character is a numeric character (0123456789).
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[編集] パラメータ

ch -
文字
Original:
character
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[編集] 値を返します

文字が数字の場合、非ゼロ値(true)、0false)その他のとき.
Original:
Non-zero value (true) if the character is a numeric character, 0 (false) otherwise.
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[編集] も参照してください

ワイド文字かどうかをチェックするには、数字です
Original:
checks if a wide character is a digit
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(関数) [edit]
C++ documentation for isdigit
ASCII values
(hex)
characters

iscntrl
iswcntrl

isprint
iswprint

isspace
iswspace

isblank
iswblank

isgraph
iswgraph

ispunct
iswpunct

isalnum
iswalnum

isalpha
iswalpha

isupper
iswupper

islower
iswlower

isdigit
iswdigit

isxdigit
iswxdigit

0 - 8 0x00-0x08 control codes (NUL, etc.) ≠0 0 0 0 0 0 0 0 0 0 0 0
9 0x09 tab (\t) ≠0 0 ≠0 ≠0 0 0 0 0 0 0 0 0
10 - 13 0x0A-0x0D whitespaces (\n,\v,\f,\r) ≠0 0 ≠0 0 0 0 0 0 0 0 0 0
14 - 31 0x0E-0x1F control codes ≠0 0 0 0 0 0 0 0 0 0 0 0
32 0x20 space 0 ≠0 ≠0 ≠0 0 0 0 0 0 0 0 0
33 - 47 0x21-0x2F !"#$%&'()*+,-./ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
48 - 57 0x30-0x39 0123456789 0 ≠0 0 0 ≠0 0 ≠0 0 0 0 ≠0 ≠0
58 - 64 0x3a-0x40 :;<=>?@ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
65 - 70 0x41-0x46 ABCDEF 0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 ≠0
71 - 90 0x47-0x5A GHIJKLMNOPQRSTUVWXYZ 0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 0
91 - 96 0x5B-0x60 [\]^_` 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
97 -102 0x61-0x66 abcdef 0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 ≠0
103-122 0x67-0x7A ghijklmnopqrstuvwxyz 0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 0
123-126 0x7B-0x7E {|}~ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
127 0x7F backspace character (DEL) ≠0 0 0 0 0 0 0 0 0 0 0 0