Tin học Sinh chuỗi nhị phân.

#include <bits/stdc++.h>
using namespace std;
int x[1000],n;
void nhapf(){
    cin>>n;
}
void xuat(){
    for(int i=1;i<=n;i++)
        cout<<x[i];
        cout<<endl;
}
void Try(int i){
    for(int j=0;j<=1;j++){
    x[i]=j;
    if(i==n) xuat();
    else Try(i+1);
    }
}
int main(){
    freopen("a.inp","r",stdin);
    freopen("b.out","w",stdout);
    nhapf();
    Try(1);
    return 0;
}

x[i]=j;