main.cpp

this a good book.

#include <iostream.h>

class Data
{
public:
	~Data()
	{
		cout<<m_i<<endl;
		cout<<m_j<<endl;
	}

	//******1*******
	
	{
		m_i = i;
		m_j = j;
	}

	//******2*******
	
	{
		this->m_i += obj.m_i; 
		this->m_j += obj.m_j;
	}
	//******3*******
	
	{
		this->m_i += i;
		this->m_j += j;
		return *this;
	}
	//******4*******
	
	{
		this->m_i += obj.m_i;
		this->m_j += obj.m_j;
		return *this;
	}
private:
	int m_i,m_j;
};

void main()
{
	Data Obj1(2,4);
	Data Obj2;

	Obj2 += Obj1;
	Obj2 += Data(2,3);
	Obj2 = Obj1 + Obj2;

	return;
}