Linux Certif

Toute la documentation sur la certification Linux LPI

isalpha

̾Á°

isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit - ʸ»ú¤òʬÎह¤ë

½ñ¼°

#include <ctype.h>



int isalnum(int c);




int isalpha(int c);




int isascii(int c);




int isblank(int c);




int iscntrl(int c);




int isdigit(int c);




int isgraph(int c);




int islower(int c);




int isprint(int c);




int ispunct(int c);




int isspace(int c);




int isupper(int c);




int isxdigit(int c);

ÀâÌÀ

¤³¤ì¤é¤Î´Ø¿ô¤Ï¡¢¸½ºß¤Î¥í¥±¡¼¥ë¤Ë½¾¤Ã¤Æ c ¤òʬÎह¤ë¡£ c ¤Ï unsigned char ¤« EOF ¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

isalnum()

±Ñ»ú¤Þ¤¿¤Ï¿ô»ú¤Ç¤¢¤ë¤«¤òÄ´¤Ù¤ë¡£ (isalpha(c) || isdigit(c)) ¤ÈÅù²Á¤Ç¤¢¤ë¡£

isalpha()

¥¢¥ë¥Õ¥¡¥Ù¥Ã¥È¤«¤É¤¦¤«Ä´¤Ù¤ë¡£É¸½à¤Î "C" ¥í¥±¡¼¥ë¤Ç¤Ï (isupper(c) || islower(c)) ¤ÈÅù²Á¤Ç¤¢¤ë¡£Â¾¤Î¥í¥±¡¼¥ë¤Ç¤Ï¡¢Âçʸ»ú¤Ç¤â¾®Ê¸»ú¤Ç¤â¤Ê¤¤Â¾¤Îʸ»ú¤Ç¤â isalpha() ¤¬ true ¤òÊÖ¤¹¤³¤È¤¬¤¢¤ë¡£

isascii()

c ¤¬¡¢ASCIIʸ»ú¥»¥Ã¥È¤Ë¹çÃפ¹¤ë 7¥Ó¥Ã¥È¤Î unsigned char ¤Ç¤¢¤ë¤«¤òÄ´¤Ù¤ë¡£

isblank()

¶õÇòʸ»ú (¥¹¥Ú¡¼¥¹¤«¥¿¥Ö) ¤Ç¤¢¤ë¤«¤òÄ´¤Ù¤ë¡£

iscntrl()

À©¸æʸ»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£

isdigit()

¿ô»ú (0¡Á9) ¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£

isgraph()

ɽ¼¨²Äǽ¤Êʸ»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£¥¹¥Ú¡¼¥¹¤Ï´Þ¤Þ¤ì¤Ê¤¤¡£

islower()

¾®Ê¸»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£

isprint()

ɽ¼¨²Äǽ¤Êʸ»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£¥¹¥Ú¡¼¥¹¤â´Þ¤Þ¤ì¤ë¡£

ispunct()

ɽ¼¨²Äǽ¤Êʸ»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£¥¹¥Ú¡¼¥¹¤È±Ñ¿ô»ú¤Ï´Þ¤Þ¤ì¤Ê¤¤¡£

isspace()

¶õÇòʸ»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£ C ¥í¥±¡¼¥ë¤« POSIX ¥í¥±¡¼¥ë¤Ç¤Ï¡¢¶õÇòʸ»ú¤È¤Ï¡¢¥¹¥Ú¡¼¥¹¡¢¥Õ¥©¡¼¥à¥Õ¥£¡¼¥É ('\f') ¡¢²þ¹Ô(newline) ('\n') ¡¢Éüµ¢(carriage return) ('\r') ¡¢¿åÊ¿¥¿¥Ö ('\t') ¡¢¿âľ¥¿¥Ö ('\v') ¤Ç¤¢¤ë¡£

isupper()

¾®Ê¸»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£

isxdigit()

16¿Ê¿ô¤Ç¤Î¿ô»ú¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¡£
0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F ¤Îʸ»ú¤Ç¤¢¤ë¤«¤É¤¦¤«¤òÄ´¤Ù¤ë¤³¤È¤ÈÅù²Á¤Ç¤¢¤ë¡£

ÊÖ¤êÃÍ

ʸ»ú c ¤¬Ä´¤Ù¤¿Ê¸»ú¤Î¼ïÎà¤Ë¹ç¤Ã¤Æ¤¤¤ì¤Ð 0 °Ê³°¤òÊÖ¤¹¡£ ¤½¤¦¤Ç¤Ê¤±¤ì¤Ð 0 ¤òÊÖ¤¹¡£

½àµò

C99, 4.3BSD. C89 ¤Ç¤Ï¡¢¤³¤ì¤é¤Î´Ø¿ô¤Î¤¦¤Á isascii() ¤È isblank() °Ê³°¤Î ¤¹¤Ù¤Æ¤¬µ¬Äꤵ¤ì¤Æ¤¤¤ë¡£ isascii() ¤Ï BSD ¤ä SVr4 ¤Î³ÈÄ¥¤Ç¤¢¤ë¡£ isblank() ¤Ï POSIX.1-2001 ¤È C99 7.4.1.3 ¤Ë½àµò¤·¤Æ¤¤¤ë¡£

Ãí°Õ

¤¢¤ëʸ»ú¤¬¤É¤Î¼ïÎà¤ËÆþ¤ë¤«¤È¤¤¤¦¤³¤È¤Ï¡¢¸½ºß¤Î¥í¥±¡¼¥ë¤Ë°Í¸¤¹¤ë¡£ ¤¿¤È¤¨¤Ð¡¢¥Ç¥Õ¥©¥ë¥È¤Î C ¥í¥±¡¼¥ë¤Ç¤Ï isupper() ¤Ï A ¤Î¥¦¥à¥é¥¦¥È¤òǧ¼±¤Ç¤­¤Ê¤¤¤Î¤Ç¡¢¤½¤ì¤¬Âçʸ»ú¤À¤È¤¤¤¦¤³¤È¤¬¤ï¤«¤é¤Ê¤¤¡£

´ØÏ¢¹àÌÜ

iswalnum(3), iswalpha(3), iswblank(3), iswcntrl(3), iswdigit(3), iswgraph(3), iswlower(3), iswprint(3), iswpunct(3), iswspace(3), iswupper(3), iswxdigit(3), setlocale(3), tolower(3), toupper(3), ascii(7), locale(7)