C Programming - Bitwise Operators - Discussion

Dear sutendra Mirajkar

int main()
{
unsigned char i = 0x80;
i=i<<1;// i is char so 0.
0x80 in binary 1000 0000
after letf shift(i<<1) is 0000 0000 .That value store in i char(1byte 00000000)
printf("%d\n", i);// out put is 0
return 0;
}
//////////////////////////////////////

our result in inter thats y i take int var; i<<1 value is store int var. The output is 256
int main()
{
unsigned char i = 0x80;
int var;
var=i<<1;
printf("%d %d %d\n", var);
return 0;
}

#include<stdio.h>

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

Then the output of i is zero can anyone explain why is it so?

@Apurva Nigam Thanks a lot.

Bitwise operators operate on always nos. Means int, so it converted into int.

I've the same doubt..:(

char is 1 byte
so, 0x80= 1000 0000
i<<1 = 0000 0000 rite?

Is it dat %d in the printf statement matters?

Char is 1byte in size. Then why everyone having explanation assuming it is 2 byte ?

What is the binary value of x (hexadecimal no) ?

@nikita.

Bitwise operator can't be applied to float and double type. This its limitation,

Check out in books.

How would you convert binary into decimal (0000 0001 0000 0000=256) ?

What do you mean by 0*80?