That sets something at i elements from the start of buf to
some_double, however I didn't see a place where you set buf
itself to point to anything that might hold i elements (I can't
parse the code in the message w/o CR's so I'm extemporizing here):
BUFTYPE bunchaElements[100];
BUFTYPE *buf = bunchaElements;
See this for a pretty good discussion:
http://en.wikibooks.org/wiki/C_Programming/Pointers_and_arrays
MS
Jun Zhang wrote:
> buf[i].target = table[i].some_double;
>
> this code is not set pointer to some value?
>
> thanks
>
> 2009/8/29 Michael Schippling <[email protected] <mailto:[email protected]>>
>
> You don't seem to have set buf to point to anything...
> MS
>
> Jun Zhang wrote:
>
> Hello, everyone. I am new to tinyos and nesc. and I have the
> following data strucuture typedef nx_struct rt_link { nx_addr_t
> target; nx_addr_t nexthop; } rt_link_t; typedef struct rt_entry
> { double some_double; uint8_t some_int; } rt_entry_t; uint8_t
> flag = 0x01; uint8_t i=0; rt_link_t * buf; rt_entry_t table[10];
> if ( flag & 0x01) { buf[i].target = table[i].some_double;
> buf[i].nexthop = table[i].some_int; } and if I use if ( flag ==
> 1) { buf[i].target = table[i].some_double; buf[i].nexthop =
> table[i].some_int; } I will get different value from buf[0],
> whats the difference?
> --
> Kind Regards
>
> Jun
>
>
>
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>
>
>
> --
> Kind Regards
>
> Jun
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