Convert Decimal to Binary in C++

Here you will get program to convert a number from decimal to binary in C++.

How to convert decimal number to binary?

Divide the number by 2 and save the remainder somewhere.
Divide the quotient with 2 again and save the remainder somewhere.
Repeat the process until 1 is left as quotient.
Now write the remainders in reverse order.

This program can only convert non decimal numbers.

Also Read: Convert Binary to Decimal in C++

Program for Decimal to Binary in C++

#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;
}

#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

Program for Decimal to Binary in C++

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