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/* Stub implementation of (obsolete) index(). */
@deftypefn Supplemental char* index (char *@var{s}, int @var{c})
Returns a pointer to the first occurrence of the character @var{c} in
the string @var{s}, or @code{NULL} if not found. The use of @code{index} is
deprecated in new programs in favor of @code{strchr}.
@end deftypefn
extern char * strchr(const char *, int);
char *
index (const char *s, int c)
return strchr (s, c);