DaniWeb Forum Index > Software Development > C++

C++ RSS

decimal to binary conversion

Please support our C++ advertiser: Intel Parallel Studio Home

•

Join Date: Sep 2006

Posts: 1

Reputation: vinay raja is an unknown quantity at this point

Solved Threads: 0

vinay raja vinay raja is offline

Offline

Newbie Poster

decimal to binary conversion

Sep 10th, 2006

Here is the solution to converting decimal no. to binary using while loop
this code is in c++

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
#include<iostream.h>
#include<conio.h>
void main()
{
 clrscr();
 unsigned long int y,i=0,j=0,r,k[50];
 unsigned long a,x,b[50];
 cout<<"\nEnter a decimal no. ";
 cin>>a;
 y=a;
 x=a-y;
 while(y>0)
 {
  r=y%2;
  k[i]=r;
  i++;
  y=y/2;
 }
 int m=0;
 while(m<10)
 {
  x=x*2;
  b[j]=int(x);
  j++;
  m++;
  if(x>1)
   x=x-1;
  else
   if(x==0)
    break;
 }
 cout<<"\nDecimal no. "<<a<<" = ";
 if(a>1)
 {
  for(int e=i-1;e>=0;e--)
   cout<<k[e];
  cout<<".";
  for(int g=0;g<m;g++)
   cout<<b[g];
 }
 else
 {
  cout<<"0.";
  for(int f=0;f<m;f++)
   cout<<b[f];
 }
 cout<<" in binary no. system";
 getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
 clrscr();
 unsigned long int y,i=0,j=0,r,k[50];
 unsigned long a,x,b[50];
 cout<<"\nEnter a decimal no. ";
 cin>>a;
 y=a;
 x=a-y;
 while(y>0)
 {
  r=y%2;
  k[i]=r;
  i++;
  y=y/2;
 }
 int m=0;
 while(m<10)
 {
  x=x*2;
  b[j]=int(x);
  j++;
  m++;
  if(x>1)
   x=x-1;
  else
   if(x==0)
    break;
 }
 cout<<"\nDecimal no. "<<a<<" = ";
 if(a>1)
 {
  for(int e=i-1;e>=0;e--)
   cout<<k[e];
  cout<<".";
  for(int g=0;g<m;g++)
   cout<<b[g];
 }
 else
 {
  cout<<"0.";
  for(int f=0;f<m;f++)
   cout<<b[f];
 }
 cout<<" in binary no. system";
 getch();
}

Last edited by Salem; Sep 10th, 2006 at 12:14 pm. Reason: Please learn to use the code tags to make your code presentable

•

Join Date: Jul 2006

Posts: 147

Reputation: Grunt has a spectacular aura about

Solved Threads: 12

Grunt

Offline

Junior Poster

Re: decimal to binary conversion

Sep 10th, 2006

There's already one in code snippet
http://www.daniweb.com/code/snippet87.html
Try to learn something from it.

The key to eliminating bugs from your code is learning from your mistakes.

•

Join Date: Jun 2006

Posts: 7,609

Reputation: ~s.o.s~ has much to be proud of

Solved Threads: 464

~s.o.s~

Offline

Failure as a human

Re: decimal to binary conversion

Sep 10th, 2006

Some points to point out in your code:

1. int main (void) is the correct prototype for the main function and not void main.

2. Dont use #include <conio.h> which is console based I/O library, it kills program portability.

3. Dont use old style headers in C++. Use something like the #include <iostream> along with using namespace std ; to use the I/O functionality.

4. Dont use clrscr() to clear the screen since its a non standard function.

Last edited by Salem; Sep 10th, 2006 at 1:15 pm. Reason: Fix a tag

I don't accept change; I don't deserve to live.