Returning Object In C++

Just as a function takes an object as its argument, it can also return an object. The following program illustrates how objects are returned. The program declares a class integer representing an integer variable x and define a function to calculate the sum of two integer values. This function finally return an object which store the sum in its data member x.

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

class integer
{
   int x;

public:
   void getdata(int x1)
    
    {
          x = x1;
    }
       
       void disp()
      {
         cout << x;
      }   
   
        integer sum(integer int2)
       {
          integer int3;

          int3, x = x + int2.x;

          return(int3);
       
       }


};
  

main()

{
   integer int1, int2, int3;

   int1.getdata(15);

   int2.getdata(25);

  cout << "\nthe value of x for object int1";

  int1.disp();

  cout << "\nthe value of x for object int2";

  int2.disp();

  cout << "\nthe sum of private data values of x belonging to object int1 and        
  int2 is";

  int3 = int1.sum(int2);

  int3.disp();

  getche();

}

You should see  the following output from the program.

  The value of x for the object int1  15


  The value of x for the object int2  25

   

  The sum of private data values of x belonging to object int1 int2 is 40