To find the mean value of a given number using friend function.

ALGORITHM:
STEP 1: Start the program.
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.
STEP 7: Stop the program.

PROGRAM:

01	#include<iostream.h>

02	#include<conio.h>

03	class  base

04

{

05	int val1,val2;

06

public:

07	void get()

08

{

09	cout<<"Enter two values:";

10	cin>>val1>>val2;

11

}

12	friend float mean(base ob);

13

};

14	float mean(base ob)

15

{

16	return float(ob.val1+ob.val2)/2;

17

}

18	void main()

19

{

20

clrscr();

21

base obj;

22	obj.get();

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

24

getch();

25

}

Output:
Enter two values: 10, 20
Mean Value is: 15