Friend Function

#include<iostream.h>

#include<conio.h>

class  base

{

    int a,b;

   public:

    void get()

    {

       cout<<"Enter the two values of a and b:";

       cin>>a>>b;

    }

    friend float sum(base ob);

};

float sum(base ob)

{

   return float(ob.a+ob.b);

}

void main()

{

    clrscr();

    base obj;

    obj.get();

    cout<<"\n Sum is : "<<sum(obj);

    getch();

}