AVR-Chat

bhadson2001 wrote:
> unsigned char a;
> a=255*20/10;
> 
> it gives output 254
> 
> for
> a=255*200/100;
> 
> it gives output 111
> 
> why it gives different results.
> 
> it there any logical relationship.
> 
>       kindly help me to resolve the problem.
>                  i will be grateful
>                            thanks a lot.......

255*20/10 -> 510 which overflows "unsigned char" (256).

The remainder is 510 % 256 -> 254.