[H-GEN] Conversion of Integer to Binary

[Christopher Biggs]

Cameron Reeves <cg.reeves at student.qut.edu.au> moved upon the face of the 'Net and spake thusly:

> > Printed out from what?  
> 
> C preferably
>  
> > Shell script?
> > 
> > In bash you can do
> > 
> > echo -e '\xxx' where xxx is an octal number.
> 
> Octal is nice, but I need binary.
> 

Ah, I was barking up the wrong tree.

You want to print binary numbers out?  eg i2b(69) => "100101"

something like

i2b(a){int b=64;char c[65];c[b]=0;for(;a;a/=2)c[--b]=a&1?'1':'0';puts(c+b);}

Not tested, might need tweaking. Just fits in one line. 

This is NOT obfuscated, just terse.  Shorter, anyone?


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