binaryrep with vector output

void bitoutput(vector <ll>& d){
    for (auto i:d){
        cout<<i;
    }
    cout<<"\n";
}
void bitrep(ll x){
    ll n=0;
    vector <ll> d;
    while (x>0){
        n=x%2;
        d.push_back(n);
        x=x/2;
    }
    reverse(d.begin(),d.end());
    bitoutput(d);
}