Computer Science Question

[Rick Forrister]

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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