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Program that provides an example of passing objects to function using call by reference method

Posted By: Barrett Schmidt     Category: C++ Programming     Views: 5721

Write a program that provides an example of passing objects to function using call by reference method.

Code for Program that provides an example of passing objects to function using call by reference method in C++ Programming

#include<iostream.h>
class data2;
class data1
{
    int a;
    public:
    void get(int no)
    {
        a=no;
    }
    friend void swap(data1 &, data2 &);
    void show()
    {
        cout<<"a= "<<a<<endl;
    }
};

class data2
{
    int b;
    public:
    void get(int no)
    {
        b=no;
    }
    friend void swap(data1 &,data2 &);
    void show()
    {
        cout<<"b= "<<b<<endl;
    }
};
void swap(data1 &a1,data2 &a2)
{
    int temp;
    temp=a1.a;
    a1.a=a2.b;
    a2.b=temp;
}

main()
{
    data1 a;
    data2 b;
    a.get(10);
    b.get(20);
    cout<<"\n\n Before swapping \n\n";
    a.show();
    b.show();
    swap(a,b);
    cout<<"\n\n After swapping\n\n";
    a.show();
    b.show();
}
  
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Barrett Schmidt
Barrett Schmidt author of Program that provides an example of passing objects to function using call by reference method is from Frankfurt, Germany.
 
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