[OCLUG-devel] one more question about structures...

[Christopher Smith]

On Sat, 2004-06-19 at 18:32, James Colannino wrote:
> Ok, I have one more question about structures...  I hope that these 
> three messages I've sent to the group in the past 30 minutes or so 
> haven't gotten annoying.  I haven't seen any activity on the oclug-devel 
> list lately, so I'm hoping that at least people will be happy that 
> there's some traffic :-P
> 
> This isn't about anything going wrong.  I'm just curious about a benign 
> compiler warning that I'm getting.  Consider the following code:
> 
> #include <stdio.h>
> 
> int main()
> 
> {
> 	struct time {
> 		unsigned short int hour;
> 		unsigned short int min;
> 	};
> 
> 	struct date_time {
> 		unsigned short int month; /* 1-12 */
> 		unsigned short int day;   /* 1-31 */
> 		unsigned short int year;
> 
> 		struct time time_of_day;
> 	} date;
> 
> 	date.time_of_day.hour = 1;
> 
> 	return 0;
> }
> 
> Whenever I assign a value to a nested structure, I get the following 
> warning from the compiler:
> 
> warning: declaration does not declare anything

Hmm... shouldn't it be:

typedef struct date_time {
	/* stuff */
} date;

Does that make the compiler warning go away?

-- 
Christopher Smith <x at xman.org>