Computer Science Question

[James McDonald]

Yes this is what I think I'm after....

*http://en.wikipedia.org/wiki/Bit_array


*On 18/11/14 17:44, Rick Forrister wrote:
> In C++ I found the following code sample:
>
> 	
>
> Nobody mentioned the Standard C++ Library: |std::bitset<N>| 
> <http://www.sgi.com/tech/stl/bitset.html>.
> Or the boost version: |boost::dynamic_bitset| 
> <http://www.boost.org/doc/libs/1_36_0/libs/dynamic_bitset/dynamic_bitset.html>.
>
> No need to roll your own:
>
> |#include  <bitset>
> #include  <iostream>
>
> int  main()
> {
>      std::bitset<5>  x;
>
>      x[1]  =  1;
>      x[2]  =  0;
>      // Note x[0-4]  valid
>
>      std::cout<<  x<<  std::endl;
> }|
>
>
> and you could map them more or less as follows:
> sex=m|f=0|1
> mood=h|s=0|1
> mature=a|c=0|1
> color=r|b=0|1
> handed=r|l=0|1
> Thus, a female child who is happy, likes re and is right handed would 
> encode to: 10100
>
> in PDP-11 assembler there's a BSB command (bit set byte), and you can 
> embed assembler in C functions.
>
> Hope it helps
> RickF
>
> On 11/17/2014 9:28 PM, James McDonald wrote:
>> Hi All,
>>
>> I am wondering how to do the following:
>>
>> Say I have a list of values I want to assign to a person e.g.
>>
>> 1. Male
>> 2. Female
>> 3. Happy
>> 4. Sad
>> 5. Child
>> 6. Red is favorite color
>> 7. Blue is favorite color
>> 8. RIght handed
>> 9. Left handed
>> etc.
>>
>> Now how do I make the list contain numerical values that I can then 
>> add together and then end up with a number that I can reverse and 
>> discern which values were assigned to the person?
>>
>> I believe that there is something in binary that means you can assign 
>> bit or a corresponding number to each option and then pull out the 
>> selections programmatically
>>
>> My problem is I can't figure out what to Google to teach myself how 
>> to do it.
>>
>> Can anyone point me in the right direction?
>>
>> Thanks.
>> James McD.
>>
>>
>>
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>> Linux-users at linux-sxs.org
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>
>
>
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