9.1.9.1 Class templates

#include "stdafx.h"
#include <iostream>
#include <stdio.h>
#include <string>
#include <vector>

using namespace std;

template <typename T>
class Point
{
public:
	T x, y;
	Point(T X, T Y)
	{
		x = X, y = Y;
	}
	void add_point(Point<T> point)
	{
		this->x += point.x;
		this->y += point.y;
	}
};

int main()
{
	Point<int> p1(1, 1);
	Point<double> p2(2.1, 2.3);
	cout << "P1: " << p1.x << ":" << p1.y << endl;
	cout << "P2: " << p2.x << ":" << p2.y << endl;
	Point<int> p3(1, 1);
	//p1.add_point(p2); you can't operate on objects of a different type
	p1.add_point(p3);
	cout << "P1: " << p1.x << ":" << p1.y << endl;

	system("pause");
	return 0;
}