Using bitshifting to convert to binary.

Quote:

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Originally Posted by +Azazel+

With >>= it doesnt work at all.

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Wait, no.. you're shifting the mask, not the variable. My mistake.
It's wrong because you're starting from the wrong side of the number. Start from the high order:

Code:

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int main()
{
        unsigned int  Mask = 0x80;
        int          count;
        int          x;

        x = 0;
        count = 'a';
        for (x = 0; x < 8; x++)
        {
                if (count & Mask)
                        printf("1");
                else
                        printf("0");
                Mask >>= 1;
        }
}

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Main can just be main(void) since you aren't using any of the command lines. You must include stdio.h and for the sake of gods, use a for loop instead - it looks better.

That works, Thank you!

What if I also want to assign values to the bits, not just extract them. What would be the method to do that?

Quote:

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Originally Posted by +Azazel+

That works, Thank you!

What if I also want to assign values to the bits, not just extract them. What would be the method to do that?

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What do you mean by "assign values to the bits"? You mean print 0, 64, 32, 0, 0, 0, 0, 1 or some such?

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Mats

I believe it means that the OP wants to assign bits to a binary number, such as 0000 0000 becomes 0001 0000.
In that case, you simply binary OR the appropriate mask. Like 0x80 sets the highest bit (eg 1000 0000).

Quote:

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I believe it means that the OP wants to assign bits to a binary number, such as 0000 0000 becomes 0001 0000.
In that case, you simply binary OR the appropriate mask. Like 0x80 sets the highest bit (eg 1000 0000).

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Yes indeed, that is what I meant. Thank you very much!