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(-)index.3 (-8 / +20 lines)
Lines 38-44 Link Here
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.Dt INDEX 3
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.Dt INDEX 3
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.Os
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.Os
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.Sh NAME
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.Sh NAME
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.Nm index
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.Nm index ,
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.Nm rindex
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.Nd locate character in string
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.Nd locate character in string
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.Sh LIBRARY
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.Sh LIBRARY
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.Lb libc
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.Lb libc
Lines 46-73 Link Here
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.In string.h
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.In string.h
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.Ft char *
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.Ft char *
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.Fn index "const char *s" "int c"
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.Fn index "const char *s" "int c"
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.Ft char *
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.Fn rindex "const char *s" "int c"
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.Sh DESCRIPTION
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.Sh DESCRIPTION
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The
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The
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.Fn index
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.Fn index
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function
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function locates the first character matching
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locates the first character matching
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.Fa c
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.Fa c
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(converted to a
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(converted to a
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.Em char )
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.Em char )
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in the null-terminated string
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in the null-terminated string
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.Fa s .
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.Fa s .
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.Pp
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The
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.Fn rindex
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function behaves as well, except locates the last character matching
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.Fa c .
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.Sh RETURN VALUES
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.Sh RETURN VALUES
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A pointer to the character is returned if it is found; otherwise
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A pointer to the character is returned if it is found; otherwise
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.Dv NULL
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.Dv NULL
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is returned.
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is returned.
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If
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If
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.Fa c
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.Fa c
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is '\e0',
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is
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.Ql \e0 ,
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.Fn index
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.Fn index
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locates the terminating '\e0'.
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and
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.Fn rindex
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locate the terminating
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.Ql \e0 .
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.Sh SEE ALSO
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.Sh SEE ALSO
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.Xr memchr 3 ,
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.Xr memchr 3 ,
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.Xr rindex 3 ,
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.Xr strchr 3 ,
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.Xr strchr 3 ,
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.Xr strcspn 3 ,
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.Xr strcspn 3 ,
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.Xr strpbrk 3 ,
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.Xr strpbrk 3 ,
Lines 77-83 Link Here
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.Xr strstr 3 ,
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.Xr strstr 3 ,
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.Xr strtok 3
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.Xr strtok 3
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.Sh HISTORY
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.Sh HISTORY
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A
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The
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.Fn index
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.Fn index
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function appeared in
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and
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.Fn rindex
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functions appeared in
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.At v6 .
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.At v6 .

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