// decimal to binary converter works for numbers 0 to 15

#include <iostream>
using namespace std;

int main()
{
	int N;
	cout << " Enter a decimal number (0-15) " << endl;
	cin >> N;

	cout << " The number " << N << " in binary is: ";

	if (N >= 8)
	{
		cout << "1";
		N = N - 8;
	}
	else
	{
		cout << "0";
	}

	if (N >= 4)
	{
		cout << "1";
		N = N - 4;
	}
	else
	{
		cout << "0";
	}

	if (N >= 2)
	{
		cout << "1";
		N = N - 2;
	}
	else
	{
		cout << "0";
	}

	if (N >= 1)
	{
		cout << "1";
		N = N - 1;
	}
	else
	{
		cout << "0";
	}

	cout << endl << endl; // end with a newline and a blank line
}