#include <iostream>
#include <memory>
using namespace std;
 
int main()
{
     const auto_ptr<float> a(new float(20));
      const auto_ptr<int> b(new int(0));
     const auto_ptr<int> c;
 
    cout << "Before assigning values" << endl;
    cout << " a: ";cout<< a.get() <<endl;
   cout<<*a;
    cout << " \nb: " ;cout<<b.get()<<endl;
   cout <<*b;
    cout << " \nc: " ;cout<<c.get()<<endl;
       *b = *a;
    *a = 50.10;
    cout << "\nafter assigning values:" << endl;
    cout << " \na: ";cout<< a.get()<<endl;
   cout << *a;
    cout << " \nb: " ;cout<< b.get()<<endl;
    cout <<*b;
    cout << " \nc: " ;cout<< c.get()<<endl;
      return 0;
 
}