gets

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Langue: ja

Version: 1993-04-04 (openSuse - 09/10/07)

Section: 3 (Bibliothèques de fonctions)

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fgetc, fgets, getc, getchar, gets, ungetc - ʸ»ú¤Èʸ»úÎó¤ÎÆþÎÏ

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#include <stdio.h>



int fgetc(FILE *stream);


char *fgets(char *s, int size, FILE *stream);
int getc(FILE *stream);
int getchar(void);
char *gets(char *s);
int ungetc(int c, FILE *stream);
 

ÀâÌÀ

fgetc() ¤Ï¡¢ stream ¤«¤é¼¡¤Îʸ»ú¤ò unsigned char ¤È¤·¤ÆÆɤߡ¢ int ¤Ë¥­¥ã¥¹¥È¤·¤ÆÊÖ¤¹¡£¥Õ¥¡¥¤¥ë¤Î½ª¤ï¤ê¤ä¥¨¥é¡¼¤È¤Ê¤Ã¤¿¾ì¹ç¤Ï EOF ¤òÊÖ¤¹¡£

getc() ¤Ï fgetc() ¤ÈƱÍͤÀ¤¬¡¢ stream ¤òÊ£¿ô²óɾ²Á¤¹¤ë¥Þ¥¯¥í¤È¤·¤Æ¼ÂÁõ¤µ¤ì¤Æ¤¤¤ë¤«¤â¤·¤ì¤Ê¤¤¡£

getchar() ¤Ï getc(stdin) ¤ÈƱ¤¸¤Ç¤¢¤ë¡£

gets() ¤Ï¡¢²þ¹Ôʸ»ú¤« EOF ¤Þ¤Ç¤Î 1¹Ô¤ò stdin ¤«¤éÆɤ߹þ¤ß s ¤¬»Ø¤¹¥Ð¥Ã¥Õ¥¡¤Ë³ÊǼ¤¹¤ë (ËöÈø¤Î²þ¹Ôʸ»ú¤ä EOF ¤Ï '\0' ¤ËÃÖ¤­´¹¤¨¤é¤ì¤ë)¡£ ¥Ð¥Ã¥Õ¥¡¡¦¥ª¡¼¥Ð¡¼¥é¥ó¤Î¥Á¥§¥Ã¥¯¤Ï¹Ô¤ï¤ì¤Ê¤¤ (²¼µ­¤Î ¥Ð¥° ¤ò»²¾È)¡£

fgets() ¤Ï stream ¤«¤éºÇÂç¤Ç size - 1 ¸Ä¤Îʸ»ú¤òÆɤ߹þ¤ß¡¢ s ¤¬»Ø¤¹¥Ð¥Ã¥Õ¥¡¤Ë³ÊǼ¤¹¤ë¡£Æɤ߹þ¤ß¤Ï EOF ¤Þ¤¿¤Ï²þ¹Ôʸ»ú¤òÆɤ߹þ¤ó¤À¸å¤ÇÄä»ß¤¹¤ë¡£ Æɤ߹þ¤Þ¤ì¤¿²þ¹Ôʸ»ú¤Ï¥Ð¥Ã¥Õ¥¡¤Ë³ÊǼ¤µ¤ì¤ë¡£ '\0' ʸ»ú¤¬°ì¤Ä¥Ð¥Ã¥Õ¥¡¤ÎÃæ¤ÎºÇ¸å¤Îʸ»ú¤Î¸å¤Ë½ñ¤­¹þ¤Þ¤ì¤ë¡£

ungetc() ¤Ï¡¢¸å¤Î read Áàºî¤ÇÆɤá¤ë¤è¤¦¤Ë¡¢ c ¤ò unsigned char ¤Ë¥­¥ã¥¹¥È¤·¤Æ stream ¤Ë½ñ¤­Ì᤹¡£ ½ñ¤­Ìᤵ¤ì¤¿Ê¸»ú¤ÏµÕ½ç¤ËÌᤵ¤ì¤ë; ½ñ¤­Ìᤷ¤È¤·¤ÆÊݾڤµ¤ì¤Æ¤¤¤ë¤Î¤Ï¡¢°ìʸ»ú¤À¤±¤Ç¤¢¤ë¡£

¤³¤³¤Ç½Ò¤Ù¤¿´Ø¿ô¤ä stdio ¥é¥¤¥Ö¥é¥ê¤ÎÆþÎÏ´Ø¿ô¤òƱ¤¸ÆþÎÏ¥¹¥È¥ê¡¼¥à¤ËÂФ·¤Æ¸ß¤¤¤Ëº®¤¼¤Æ»È¤¦¤³¤È¤¬¤Ç¤­¤ë¡£

¤³¤ì¤é¤Î½èÍý¤ò¥í¥Ã¥¯¤»¤º¤Ë¹Ô¤¤¤¿¤¤¤È¤­¤Ï¡¢ unlocked_stdio(3) ¤ò»²¾È¤Î¤³¤È¡£

ÊÖ¤êÃÍ

fgetc(), getc(), getchar() ¤Ï¡¢Ê¸»ú¤ò unsigned char ¤È¤·¤ÆÆɤó¤Ç int ¤Ë¥­¥ã¥¹¥È¤·¤ÆÊÖ¤¹¡£¥Õ¥¡¥¤¥ë¤Î½ª¤ï¤ê¤ä¥¨¥é¡¼¤Î¾ì¹ç¤Ï EOF ¤òÊÖ¤¹¡£

gets() ¤È fgets() ¤Ï¡¢À®¸ù¤¹¤ë¤È s ¤òÊÖ¤·¡¢¥¨¥é¡¼¤ä 1 ʸ»ú¤âÆɤ߹þ¤ó¤Ç¤¤¤Ê¤¤¤Î¤Ë¥Õ¥¡¥¤¥ë¤Î½ª¤ï¤ê¤Ë¤Ê¤Ã¤¿ ¾ì¹ç¤Ë NULL ¤òÊÖ¤¹¡£

ungetc() ¤ÏÀ®¸ù¤¹¤ë¤È c ¤òÊÖ¤·¡¢¥¨¥é¡¼¤Î¾ì¹ç¤Ï EOF ¤òÊÖ¤¹¡£

½àµò

C89, C99. LSB ¤Ç¤Ï gets() ¤ÏÈó¿ä¾©¤Ç¤¢¤ë¡£

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gets() ¤ÏÀäÂФ˻ÈÍѤ·¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£ Á°¤â¤Ã¤Æ¥Ç¡¼¥¿¤òÃΤ뤳¤È¤Ê¤·¤Ë gets() ¤¬²¿Ê¸»úÆɤफ¤òÃΤ뤳¤È¤Ï¤Ç¤­¤º¡¢ gets() ¤¬¥Ð¥Ã¥Õ¥¡¤Î½ª¤ï¤ê¤ò±Û¤¨¤Æ½ñ¤­¹þ¤ß³¤±¤ë¤¿¤á¡¢ gets() ¤ò»È¤¦¤Î¤Ï¶Ë¤á¤Æ´í¸±¤Ç¤¢¤ë¡£ ¤³¤ì¤òÍøÍѤ·¤Æ¥³¥ó¥Ô¥å¡¼¥¿¤Î¥»¥­¥å¥ê¥Æ¥£¤¬Çˤé¤ì¤Æ¤­¤¿¡£ Âå¤ï¤ê¤Ë fgets() ¤ò»È¤¦¤³¤È¡£

ÆþÎÏ¥¹¥È¥ê¡¼¥à¤Î¥Õ¥¡¥¤¥ë¥Ç¥£¥¹¥¯¥ê¥×¥¿¤ËÂФ·¤Æ¡¢ stdio ¥é¥¤¥Ö¥é¥ê¤ÎÆþÎÏ´Ø¿ô¤È¡¢Äã¥ì¥Ù¥ë¸Æ¤Ó½Ð¤·¤Î read() ¤òº®¤¼¤Æ¸Æ¤Ó½Ð¤¹»ö¤Ï´«¤á¤é¤ì¤Ê¤¤¡£ ·ë²Ì¤¬¤É¤¦¤Ê¤ë¤«¤Ïʬ¤«¤é¤º¡¢¤ª¤½¤é¤¯¤¢¤Ê¤¿¤Î ˾¤ó¤Ç¤¤¤ë·ë²Ì¤Ë¤Ï¤Ê¤é¤Ê¤¤¤À¤í¤¦¡£

´ØÏ¢¹àÌÜ

read(2), write(2), ferror(3), fgetwc(3), fgetws(3), fopen(3), fread(3), fseek(3), getline(3), getwchar(3), puts(3), scanf(3), ungetwc(3), unlocked_stdio(3)