#include <stdio.h>

int N = 3;
int A[10];

void print_bin()
{
	int i;
	for(i = 0; i < N; i++)
		printf("%d", A[i]);
	printf("\n");
}

void bin_gen(int index)
{
	if(index >= N)
	{
		print_bin();
		return;
	}
	
	
	A[index] = 0;
	bin_gen(index+1);
	
	
	A[index] = 1;
	bin_gen(index+1);	
}

int main()
{
	bin_gen(0);
}