Program for Friend Function Using C++ Programming

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

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 to find the mean value of a given number in C++ using friend function
Pardeep Patel @ studywarehouse.com */

#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();
}

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