On 26-Feb-02 Also-Antal Csaba wrote:
> Hi,
>
> When I use this code:
> temp = (*house[index].numb).temperature;
> the picc make good result.
>
> But if I want change the value of temperature in the struct, with this:
> (*house[index].numb).temperature=temp;
> I get this message:
> varibles.c: 108: Can't generate code for this expression (error)

Your definitions and typedefs seem more complex than is needed, but I think
I've worked them out.

house is an array of blokks
so house[index] is a blokk

a blokk contains a single element numb which is a pointer to a ship
so house[index].numb  is a pointer to a ship
so house[index].numb->temperature is the temperature member in a ship

Note the use of the "->" operator.

Try that and see it is works.  It should be equiv to the expression you used
but maybe there is a compiler bug or restriction.

Peter.


>
> This code is work:
> ship1.temperature = 999;
>
> and this not:
>
> cost ship * p;
> p=&ship1;
> (*p).temperature=123;
> the error message is same.
>
> Why???
>
>
> typedef struct {
> char address;
>
> int temperature;
> char adjust;
> char max_alarm;
> char min_alarm;
> signed char tem_cal;
>
> int relhum;
> int pwm;
> char spay_time;
> char spay_dlay;
> char min_hum;
> char max_hum;
> char str_time;
> char stp_time;
> signed char rh_cal;
>
> int light;
> int optimum;
> int close_time;
> }ship;
>
> typedef struct {
> const ship * numb;
> }blokk;
>
>
>
> static bank3 ship ship1 = 111,210,0,400,40,-123,
> 550,1000,10,100,40,80,81,150,0, 134,300,4000;
>
> etc...
>
> const blokk house[] ={ & ship1,
> & ship2,
> & ship3,
> & ship4,
> & ship5,
> & ship6,
> & ship7,
> & ship8
> };
>
> --
> http://www.piclist.com hint: PICList Posts must start with ONE topic:
> [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

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E-Mail: Peter Onion <ponion@srd.bt.co.uk>
Date: 26-Feb-02
Time: 10:50:21

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