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strchr.c
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1987-10-28
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547b
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22 lines
/*
* strchr - find first occurrence of a character in a string
*/
#define NULL 0
char * /* found char, or NULL if none */
strchr(s, charwanted)
CONST char *s;
register char charwanted;
{
register CONST char *scan;
/*
* The odd placement of the two tests is so NUL is findable.
*/
for (scan = s; *scan != charwanted;) /* ++ moved down for opt. */
if (*scan++ == '\0')
return(NULL);
return(scan);
}