It's a bit difficult to explain why -16 is 1111 1111 1111 1111 1111 1111 1111 0000, but that is what it is. Perhaps it will help if you know that -1 is 1111 1111 1111 1111 1111 1111 1111 1111 and then you do -1 + -1 to get 1111 1111 1111 1111 1111 1111 1111 1110 which is -2, and you can keep on going until you get to -16. Try it and see.
Even though it looks like zero value is in the middle between positive and negative because the opposite of all-zero-bit is all-one-bit, it is not. Because 0 is (somewhat) being included in the positive side, there are 2^31 positive integer (0 up to (2^31)-1) and 2^31 negative integer (-1 up to -2^31) numbers. The first bit of the 32-bit is the sign bit.
Now, when you flip bits, it is not going to be exact as you think -- the flipped bit value of 15 is not -15. Below is value pairs from flipping bits. You can see that the pair is not perfectly matched to its own number but is off by 1.
Hi. I have a form with list box : lst_product, datagridview : grd_order and button: btn_addline. lst_product has a list of product ids selected from database (MS Acess 2013) , grd_order is by default empty except for 2 headers and btn_addline adds rows to grd_order.
OK, so HostGator for some reason no longer allows gcc/g++ access unless you have a Designated Server account, which is a lot of money to spend just to compile my "Hello World" program. Thus I figured I'd compile at home, then upload. Program is your regular old bare-bones Hello World ...
Hi, as I was told that my code doesn’t scale well at all, I thought perhaps I’d try to get a better understanding of interfaces/abstract classes and classes and the relationship between them.
I don’t want at this stage work on a big separate project as I've already got plenty ...