index(3)
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<a href="/modules/moniwiki/wiki.php/manSearch?google=none&name=index">index</a>(3)

1장. index(3)

¹®ÀÚ¿­¿¡¼­ ij¸¯Å͸¦ ã´Â´Ù.


1.1. »ç¿ë¹ý

#include <strings.h>

char *index(const char *s, int c);
char *rindex(const char *s, int c);
		


1.2. ¼³¸í

index()ÇÔ¼ö´Â ¹®ÀÚ¿­ s¿¡¼­ c¹®ÀÚÀÇ À§Ä¡¸¦ µÇµ¹·ÁÁØ´Ù. °Ë»öÀº ¹®ÀÚ¿­ óÀ½ ºÎÅÍ.

rindex()ÇÔ¼ö´Â ¹®ÀÚ¿­ s¿¡¼­ c¹®ÀÚÀÇ À§Ä¡¸¦ µÇµ¹·ÁÁØ´Ù. °Ë»öÀº ¹®ÀÚ¿­ µÚ¿¡¼­ ºÎÅÍ.


1.3. ¹Ýȯ°ª

¹®ÀÚ¿­À» ã¾Ò´Ù¸é Æ÷ÀÎÅ͸¦ ±×·¸Áö ¾Ê´Ù¸é NULLÀ» µÇµ¹·ÁÁØ´Ù.


1.4. ¿¹Á¦

#include <strings.h>
#include <stdio.h>

int main()
{
    char data[] = "hello:world=ok";
    char *sp, *dp;
    char mydata[20] = {0x00,};

    sp = index(data, ':');
    dp = rindex(data, '=');

    strncpy(mydata,sp+1, dp-sp-1);
    printf("[%s]\n", mydata);
}
		
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