Passing Object as argument

Passing Object as argument:

  An object can be passed into function as function argument like normal variables. This is illustrated from following example. This example shows addition of two complex numbers.

#include<iostream.h>

#include<conio.h>

class complex

  {

   private:

     int real, imj;

   public:

     void get_complex();

     void add_complex(complex, complex);

     void display_complex();

  };

    void complex:: get_complex()

       {      cout<<"Real part:\t";

               cin>>real;

               cout<<"\nImj Part:\t";

               cin>>imj;      }

void complex::display_complex()

    {    cout<<"The sum is:\t" ;

          cout<<real<<"+j"<<imj;    }

 void complex::add_complex( complex c1, complex c2)

    {   real=c1.real+c2.real;

       imj=c1.imj+c2.imj;    }

void main()

  {

   complex first, second, result;

   clrscr();

   cout<<"\nEnter first complex number\n";

   first.get_complex();

   cout<<"\nEnter second complex number\n";

   second.get_complex();

   result.add_complex(first,second); //objects first and second passed as argument

   result.display_complex();

   getch();

    }

Output: 

Enter first complex number

Real part:      2

Imj Part:       4

Enter second complex number

Real part:      1

Imj Part:       8

The sum is:     3+j12