#include<iostream>
#include<conio.h>
using namespace std;
class  base
{
    int val1,val2;
   public:
    void get()
    {
       cout<<"Enter two values:";
       cin>>val1>>val2;
     
    }
 //comments: declaration of friend function ------>  friend return_type function_name(argument/s);
    friend float mean(base ob);// ob is a object
};
float mean(base ob)//return type function argument
{
   return float(ob.val1+ ob.val2)/2;
}
 main()
{
//  clrscr();
    base obj;
    obj.get();
    cout<<"\n Mean value is : "<<mean(obj);//function call
    getch();
}