Here you will get the program to change over a number from decimal to double in C++.

How to change over the decimal number to pair?

Gap the number by 2 and spare the rest of.

Partition the remainder with 2 again and spare the rest of.

Rehash the procedure until 1 is left as remainder.

Presently compose the leftovers in switch request.

This program can just change over non-decimal numbers

**Program**

```
#include<iostream>
using namespace std;
int main()
{
int d,n,i,j,a[50];
cout<<"Enter a number:";
cin>>n;
cout<<"\nThe binary conversion of "<<n<<" is 1";
for(i=1;n!=1;++i)
{
d=n%2;
a[i]=d;
n=n/2;
}
for(j=i-1;j>0;--j)
cout<<a[j];
return 0;
}
```

**Output**

*Enter a number:5**The binary conversion of 5 is 101*