9.1.8.1 Template specialization

#include "stdafx.h"
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <typeinfo>

using namespace std;
class Point
{
public:
	int getX(){return x;}
	int getY() { return y; }
	Point(int X, int Y) : x{ X }, y{Y} {}
private:
	int x;
	int y;
	
};
template<class T>
int signum(T data)
{


		if (data == 0)
		{
			return 0;
		}
		else if (data > 0)
		{
			return 1;
		}
		else return -1;
	}
int signum(Point data)
{
	if ((signum(data.getX()) == -1) && (signum(data.getY()) == -1))
	{
		return -1;
	}
	else if ((signum(data.getX()) == 1) && (signum(data.getY()) == 1))
	{
		return 1;
	}
	else return 0;
}
template<class T>
string tostr(T data)
{
	return to_string(data);
}
int main() {
	int valuei = -5;
	vector <Point> points = { { -1, 2 },{ -3, -5 },{ 2, 2 } };

	cout << "Value: " << valuei << " sgn: " << signum(valuei) << endl;
	for (auto point : points)
		cout << "Point: " << point.getX() << ", " << point.getY() << " sgn:" << signum(point) << endl;

	system("pause");
	return 0;
}