#include <iostream>
using namespace std;
 
#define MIN_BITS(t) (sizeof(t) * 8)
 
void print_binary( unsigned number )
{
    const int num_bits = MIN_BITS(number);
 
    unsigned bits [ num_bits ];
    int count;
 
    for(count = 0; (number != 0) && (count < num_bits); ++count)
    {
        bits[count] = number & 1;
        number >>= 1;
    }
 
    for(int i = count-1; i >= 0; --i)
        cout << bits[i];
}
 
int main() {
	print_binary(12345);
	return 0;
}

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