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357mag · Jul 27th, 2007, 5:37 AM

I'd rather stick with my(or Herb's example). I think it's easier to follow. I do like his books cuz he provides lots of cool little programs to work with. But his coding style is really bad as far as his use of whitespace.

Getting back to my original question. How does the compiler know to only work with one column at a time? I can clearly see that is what the compiler is doing here. If you have an integer like 123(0111 1011), and your mask is set to 128(1000 0000) when you AND 0 and 1 you print 0. Then you move over to the right one column and you AND 1 and 1 and you print 1. Then you move over to the right one column and you AND 1 and 1 and you print 1.

You work with one column at a time. I know how the boolean AND works. You only get a 1 if both bits are set to 1. But does the fact that my mask is only has a 1 in just one bit position at at time, and 0's in all the other bit positions, does this make the compiler not see all those other columns? I am working with an 8 bit integer, so I have 8 columns.

Jul 27th, 2007, 5:37 AM	#4
357mag Hobbyist Programmer Join Date: Mar 2005 Posts: 148 Rep Power: 4	I'd rather stick with my(or Herb's example). I think it's easier to follow. I do like his books cuz he provides lots of cool little programs to work with. But his coding style is really bad as far as his use of whitespace. Getting back to my original question. How does the compiler know to only work with one column at a time? I can clearly see that is what the compiler is doing here. If you have an integer like 123(0111 1011), and your mask is set to 128(1000 0000) when you AND 0 and 1 you print 0. Then you move over to the right one column and you AND 1 and 1 and you print 1. Then you move over to the right one column and you AND 1 and 1 and you print 1. You work with one column at a time. I know how the boolean AND works. You only get a 1 if both bits are set to 1. But does the fact that my mask is only has a 1 in just one bit position at at time, and 0's in all the other bit positions, does this make the compiler not see all those other columns? I am working with an 8 bit integer, so I have 8 columns.