Operator_Overloading.cpp

#include <iostream>
#include <cstdlib>

class Vec3
{
public:
	// constructor
	Vec3(float _x, float _y, float _z)
	{
		m_x = _x;
		m_y = _y;
		m_z = _z;
	}

	// Prints out the contents of the vector
	void print()
	{
		std::cout << m_x << "," << m_y << "," << m_z << "\n";
	}

	// Function to add the contents of a vector to this instance
	Vec3 add(Vec3 _b)
	{
		Vec3 tmp(0,0,0);
		tmp.m_x = m_x + _b.m_x;
		tmp.m_y = m_y + _b.m_y;
		tmp.m_z = m_z + _b.m_z;

		return tmp;
	}

	// Function to add the contents of a vector to this instance
	Vec3 operator +(Vec3 _b)
	{
		Vec3 tmp(0,0,0);
		tmp.m_x = m_x + _b.m_x;
		tmp.m_y = m_y + _b.m_y;
		tmp.m_z = m_z + _b.m_z;

		return tmp;
	}

	void addTo(Vec3 _b)
	{
		m_x = m_x + _b.m_x;
		m_y = m_y + _b.m_y;
		m_z = m_z + _b.m_z;		
	}

	void operator +=(Vec3 _b)
	{
		m_x = m_x + _b.m_x;
		m_y = m_y + _b.m_y;
		m_z = m_z + _b.m_z;		
	}

	float m_x;
	float m_y;
	float m_z;
};

int main()
{
	Vec3 a(1,1,1);
	Vec3 b(1,2,3);

	//Vec3 c = a.add(b);
	Vec3 c = a + b;

	//c.addTo(b);
	c += b;
 
	a.print();
	b.print();
	c.print();
}