newlib/libc/string/index.c

   1 /*
   2 FUNCTION
   3         <<index>>---search for character in string
   4
   5 INDEX
   6         index
   7
   8 SYNOPSIS
   9         #include <strings.h>
  10         char * index(const char *<[string]>, int <[c]>);
  11
  12 DESCRIPTION
  13         This function finds the first occurence of <[c]> (converted to
  14         a char) in the string pointed to by <[string]> (including the
  15         terminating null character).
  16
  17         This function is identical to <<strchr>>.
  18
  19 RETURNS
  20         Returns a pointer to the located character, or a null pointer
  21         if <[c]> does not occur in <[string]>.
  22
  23 PORTABILITY
  24 <<index>> requires no supporting OS subroutines.
  25
  26 QUICKREF
  27         index - pure
  28 */
  29
  30 #include <string.h>
  31 #include <strings.h>
  32
  33 char *
  34 index (const char *s,
  35         int c)
  36 {
  37   return strchr (s, c);
  38 }