Thursday, 18 June 2009

Copy Constructor and Assignment Operator

This example shows the Copy Constructor and the Assignment Operator. In the example, I have just relied on the Default Copy Constructor and the Default Assignment Operator. For a complex class, the default may not be a good option and they will have to be explicitly written.


//Program tested on Microsoft Visual Studio 2008 - Zahid Ghadialy
#include<iostream>

using namespace
std;

class
A {
public
:
int
x,y;
};


int
main()
{

A a;
a.x = 11;
a.y = 2222;

A a2(a); //Default Copy constructor called
//Copies a paramaters to a2
cout<<"a2 variables are: a2.x = "<<a2.x<<" and a2.y = "<<a2.y<<endl;

A a3;
a3 = a; //Default Assignment Operator called
//Copies a paramaters to a3
cout<<"a3 variables are: a3.x = "<<a3.x<<" and a3.y = "<<a3.y<<endl;

return
0;
}



The output is as follows:

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