enter code here
include
int n;
void f(int m)
{
int i = 0;
int a[20];
if(m==n)
{
for(i = 0; i < n; i++)
{
printf("%d",a[i]);
}
printf("\n");
}
else
{
a[m] = 0;
f(m);
a[m] = 1;
f(m);
}
}
int main(void)
{
int m = 0;
// scanf("%d",&n);
n = 5;
f(m);
return 0;
}