C doubt


int main()
unsigned char i=0x80;
printf("%d %d\n",i<<1,sizeof(unsigned char));
return 0;

output of this code is 256 1

binary conversion of i is 10000000
now if shift it to left by 1,then ishould get zero,as there is only 8
bits available for i.
why i am getting 256.
range of unsigned char is from 0 to +255

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