#include<iostream>
using namespace std;
int main()
{
int n;
cout<<"nhap vao so n=";
cin>>n;
cout<<"dang bieu dien nhi phan cua so "<<n<<" la:"<<endl;
if (n>0)cout<<"1";
while(n>1)
{
int t;
t=n%2;
cout<<t;
n=(n-t)/2;
}
cout<<endl;
system("pause");
}

#include<iostream>
using namespace std;
int muoi_mu(int d)
{
int b=1;
if(d==0) return 1;
if(d>0)
{
for(int j=1;j<=d;j++) b=b*10;
return b;
}
}
int main()
{
int n;
cout<<"nhap vao so n=";
cin>>n;
cout<<"dang bieu dien nhi phan cua so "<<n<<" la:"<<endl;
int a=0;
int d=0;
while(n>=1)
{
int t=n%2;
a=a+ t*muoi_mu(d);
n=(n-t)/2;
d++;
}
cout<<a<<endl;
system("pause");
}