using System;
public class Point
{
public Point( int x, int y )
{
this.X = x;
this.Y = y;
}
public int X;
public int Y;
public static Point operator + ( Point a, Point b )
{
return new Point( a.X + b.X, a.Y + b.Y );
}
public static Point operator - ( Point a )
{
return new Point( - a.X , - a.Y );
}
static void Main(string[] args)
{
Point p = new Point( 3, 4 );
Point q = new Point( 36, -5 );
Point r = p + ( - q );
System.Console.WriteLine( "Result: x = {0}, y = {1}", r.X, r.Y );
}
}
Result: x = -33, y = 9