Re: formatting binary output

From:
Barry <dhb2000@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Thu, 13 Sep 2007 17:21:33 +0800
Message-ID:
<fcavet$m4$1@aioe.org>
Zara wrote:

On Thu, 13 Sep 2007 16:10:48 +0800, Barry <dhb2000@gmail.com> wrote:

Zara wrote:

On Wed, 12 Sep 2007 18:44:00 -0700, zgfareed@gmail.com wrote:

My program converts decimals to binary, hex etc. The output of the
binary numbers are to be in the form 0000 0000 for all numbers from 0
to 300. Does anyone have any suggestions as how to get the space
between each 4 bits?


You may use std::bitset to store the number, and use to_string member
function.

#include <string>
#include <bitset>
#include <iostream>

int main()
{
  std::bitset<8> number(145);
  std::string representation(number.to_string());
  std::cout
    <<representation.substr(0,4)<<' '
    <<representation.substr(4)<<std::endl;
}


using bitset and its to_string()
in this way, you have to ignore all the heading '0's


No, because t to_string generates exactly eisht characters, as
requested by OP


Well,
if "0011 1100" is OK, then OK
I thought for a binary number it would prettier to write "11 1100"

--
Thanks
Barry

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