Programming

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
	int num = 0;
	double k = 0;
	int max = 0;
	bool binary[100];
	cout << "Enter a decimal number: " ; 
		cin >> num;
		
	while (pow(2,k) <= num)
		k++;
		
	k--;				// Decrements the power after the highest power of 2 is found.	  
	max = k;
	
	while (k >= 0 && num > 0)
	{
		if (pow(2,k) > num)
			binary[k] = 0;
		else
		{
			binary[k] = 1;
			num -= pow(2,k);
		}
		k--;
	}
	
	while (max >= 0)
	{
		cout << binary[max];
		max++;
	}
	
return 0;
}

#include <iostream>
#include <cmath>
using namespace std;

int main(void)
{
	unsigned int num, q;
	cout << "Enter a decimal number: " ; 
		cin >> num;

        for(q=31; q >= 0; q--)
        {
                // Shift the number q bits to the right, then check if bit 1 is set.
                if((num >> q) & 1) cout << "1";
                else                     cout << "0";
        }

        return(0);
}