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# The Red Hat newlib C Library

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### 5.4 `index`—search for character in string

Synopsis

    #include <strings.h>
    char * index(const char *string, int c);

Description
This function finds the first occurence of c (converted to a char) in the string pointed to by string (including the terminating null character).

This function is identical to `strchr`.

Returns
Returns a pointer to the located character, or a null pointer if c does not occur in string.

Portability
`index` requires no supporting OS subroutines.