VERY VERY VERY tough math problem --> wonder who can solve this one???

sephiroth03 · 2001-08-05T04:01:22

Hi you guys. I don't know if this is the correct forum, but I have a math problem, (at least i think it is a math problem, maybe it's a programming problem, anyways i think this problem is one for math/programming experts). A friend of mine asked me to solve this problem. So here it is: Suppose you have a set of checkboxes, which all have his own value: 1 - Checkbox 1 2 - Checkbox 2 4 - Checkbox 3 8 - Checkbox 4 16 - Checkbox 5 32 - Checkbox 6 64 - Checkbox 7 128 - Checkbox 8 256 - Checkbox 9 512 - Checkbox 10 1024 - Checkbox 11 2048 - Checkbox 12 4096 - Checkbox 13 8192 - Checkbox 14 16384 - Checkbox 15 32768 - Checkbox 16 131072 - Checkbox 17 262144 - Checkbox 18 524288 - Checkbox 19 As you can see, the value of one checkbox is the double of the value of the previous checkbox (ie: The value of Checkbox 6 is 32 and the value of Checkbox 7 is 64 and so on) All of these Checkboxes have by default been turned of, and there is a command line where a user can enter a number which corresponds to one of these numbers and that number turns the corresponding checkbox on (ie: when the user enters the number 4096, Checkbox 13 is turned on). The idea is, if the user enters the number 768(256+512) then the checkboxes 9 and 10 should be turned on. Now my question is, if the user enters a number, ie 3072(1024+2048), is there any way for the program to know which checkboxes should be turned on??? In this case the chechboxes 11+12 should be turned on. BTW, If you post code, i would prefer it in VB (cause my friend's programming in VB). Bu C++ would do just fine (cause i can convert that to VB). Gosh i SURE hope this is the correct forum !!! And guys PLEASE PLEASE PLEASE reply !!! If you prefer answering me via e-mail: riteshov@hotmail.com Greetz, Sephiroth The Third "Some that live deserve to die and some that are dead deserve to live" Edited by - sephiroth03 on August 4, 2001 6:49:09 AM

Math and Physics Programming

Started by sephiroth03 August 04, 2001 05:40 AM

9 comments, last by sephiroth03 23 years, 6 months ago

brettporter

122

August 05, 2001 04:01 AM

"I mean what if the user enters 3072, would that code STILL work ???"

Yes.

"plz give me a working fuction, not some loose lines of code i don''t know how to use"

It''s nobody''s job around here to write your code for you. I showed more than enough to solve what you originally asked. If you are struggling understanding a for loop, the Maths and Physics Forum is probably not the best place to hang around.

Just for a point of reference of how hard this problem actually should be - I learnt that in grade 9 math - and surprisingly I still remember it! :D

~~~
Cheers!
Brett Porter
PortaLib3D : A portable 3D game/demo libary for OpenGL

~~~Cheers!Brett PorterPortaLib3D : A portable 3D game/demo libary for OpenGLCommunity Service Announcement: Read How to ask questions the smart way before posting!

VERY VERY VERY tough math problem --> wonder who can solve this one???

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VERY VERY VERY tough math problem --> wonder who can solve this one???

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