FRIEND FUNCTION

AIM:
         To implement a C++ program to find the mean value of a given number using friend function

ALGORITHM:

Step 1:  Include the header files

Step 2:  Declare the class name as base with data members and member functions.

Step 3:  The function get () is used to read the 2 inputs from the user.

Step 4:  Declare the friend function mean (base ob) inside the class.

Step 5:  Outside the class to define the friend function and do the following.

Step 6:  Return the mean value (ob.val1+ob.val2)/2 as a float.

PROGRAM:

#include<iostream.h>

#include<conio.h>

class  base

{

    int val1,val2;

   public:

    void get()

    {

       cout<<"Enter two values:";

       cin>>val1>>val2;

    }

    friend float mean(base ob);

};

float mean(base ob)

{

   return float(ob.val1+ob.val2)/2;

}

void main()

{

    clrscr();

    base obj;

    obj.get();

    cout<<"\n Mean value is : "<<mean(obj);

    getch();

}          

SAMPLE OUTPUT:

Enter two values: 10, 20

Mean Value is: 15

RESULT:

    Thus a C++ program to find the mean value of a given number using friend function is implemented successfully.