index(3)                                                       index(3)

  index()

  NAME

    index() - locate character in string

  SYNOPSIS

    #include 

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

  DESCRIPTION

    The index(3) function locates the first character matching c (converted to
    a char) in the null-terminated string s.

  RETURN VALUES

    A pointer to the character is returned if it is found; otherwise NULL is
    returned. If c is '\0', index(3) locates the terminating '\0'.

  SEE ALSO

    memchr(3)

    rindex(3)

    strchr(3)

    strcspn(3)

    strpbrk(3)

    strrchr(3)

    strsep(3)

    strspn(3)

    strstr(3)

    strtok(3)

  USAGE NOTES

    The index function is thread safe.

    The index function is not async-signal safe.