#include <iostream>
#include <bitset>
#include <ctime>

using std::cout;        using std::endl;
using std::srand;       using std::rand;
using std::bitset;      using std::time;

int main()
{
        const int columns = 5; 
        // seeds the random number generator based on system time.
        srand((unsigned) time(0));

        // the size of numbers output by rand() (compiler/architecture specific).
        const int bits = (sizeof(RAND_MAX)*8)-1;
        while (true)
        {
                for (int i=0; i<columns; i++) {
                        cout << " " << bitset<bits>(rand());
                }
                cout << endl;
        }
}