RE: [avr-gcc-list] are signed chars signed :-) ?

[Dave Hylands]

Hi Bernard,

> I just do not understand why I get such a warning! Gcc 
> 3.3.2.1 on Linux groks the function without complaining with 
> -Wall. 'a' being signed, I feel I have the right to compare 
> it to being greater or equals to zero, no ? ;-)

Different compilers (and perhaps even different versions of the same compiler) 
can treat char as signed or unsigned. If you really want one or the other then 
use the appropriate keyword:

        signed char a;

Or

        unsigned char a;

Then you'll get a specific type rather than the compiler default.

--
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/