Simple Operator Overloading.cpp

// operator-overloading.cpp : Defines the entry point for the Operator Overloading application.
//

#include "stdafx.h"
#include <iostream>

using namespace std;

class Nums{
private:
	int x, y, z;
public:
	Nums(int p, int q, int r);
	Nums(); // This non-parameterized constructor is unneccessary here
	Nums operator+(const Nums& obj); // Operator "+" Signature
	Nums operator-(const Nums& obj); // Operator "-" Signature
};

// Constructor 
Nums::Nums(int p, int q, int r){
	x = p;
	y = q;
	z = r;
}

Nums::Nums() {
	x = y = z = 0;
}
// Operator "+" Definition
Nums Nums::operator+(const Nums& obj){
	int _x = x + obj.x;
	int _y = y + obj.y;
	int _z = y + obj.z;
	return Nums(_x, _y, _z);

}
// Operator "-" Definition
Nums Nums::operator-(const Nums& obj){
	int _x = x - obj.x;
	int _y = y - obj.y;
	int _z = z - obj.z;
	return Nums(_x, _y, _z);

}

// I have Visual C++ installed in this laptop.
// so, I used a different entry point signature.
// use your traditional int main() entry point. 
int _tmain(int argc, _TCHAR* argv[])
{
	Nums a(1, 2, 3); // Initializing First Nums Object
	Nums b(4, 5, 6); // Initializing Second Nums Object
	Nums add = a + b; // Nums Object that Contains Addition Result.
	Nums sub = b - a; // Well, you know what this object contains.

}