c++ - Hexadecimal arithmetic... Love Math? Good! *Heeelp!*
Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I went ahead and started reading "Who's Afraid of C++?" as suggested. = Surprisingly, I also became more and more intrigued. It was actually = starting to help me better understand places where I was getting stuck = in my other studies of C. =20 I'm utterly *terrible* at math, but as I continued to study all this = comp. science, a light in some dark, unused part of my brain began to = slowly brighten, and I was beginning to understand! Eureka!! ...of course, that would be the point where I crash into some kind of = math problem that completely trashed my new natural high. And, here it is! Using the hexadecimal system, answer this problem: 1a + 2e =3D Welp, 'Susan' said she got 48 for an answer. Well, I got 41. Not only = was I waaay off, but when I saw how the answer *should* be worked out, = it knocked me into next week! (meaning it blew me away) ...and, here's how it's worked out! 1(1 * 16) + a(10 * 1)=20 2(2 * 16) + e(14 * 1)=20 ------------------=20 3(3 * 16) + 18(24 * 1 =3D 1 * 16 + 8 * 1)=20 "Carry the 1 from the low digit to the high digit of the answer, to = produce:=20 4(4 * 16) + 8(8 * 1), or 48 hex, which is the answer" Well, I could only figure just so many guesses as to what all this = means. But all in all, I honestly have no clue. =20 All I can figure is: * In a multi-tasked math problem, division and multiplication are worked = out before addition and subtraction. * I'm guessing that the 4 parts to the problem represent the 4 places in = a binary code that altogether make up a hexadecimal. How "way off" am I = still? Probably very... Would anyone who is gifted (to any lengths) in the realms of math and = comp. science be willing to share in the gift and please help me out? = My math knowledge only goes as far as a small crumb of geometry. Thanks a Million, Me
Sep 21 2002
* In a multi-tasked math problem, division and multiplication are worked out before addition and subtraction.
Sep 21 2002