Program to illusrate the use of friend functions

Code for Program to illusrate the use of friend functions in C++ Programming

 

 

 #include<iostream.h>
 #include<conio.h>

 /*************************************************************************///-------------------------  CLass Declarations  ------------------------///*************************************************************************/class two;

 /*************************************************************************///------------------------------  one  ----------------------------------///*************************************************************************/class one
    {
       private:
        int data_1;

       public:
        one() { data_1=100; }
        friend int access_both(one,two);
    };

 /*************************************************************************///------------------------------  two  ----------------------------------///*************************************************************************/class two
    {
       private:
        int data_2;

       public:
        two() { data_2=100; }
        friend int access_both(one,two);
    };

 /*************************************************************************///-------------------------  access_boyh(one,two)  ----------------------///*************************************************************************/int access_both(one a,two b)
    {
       return (a.data_1+b.data_2);
    }


 main()
    {
       clrscr();

       one a;
       two b;

       cout<<"\n Data returned by the function access_both(one,two) = ";
       cout<<access_both(a,b);

       getch();
       return 0;
    }