static void Main(string[] args)
{
point coordinates = new point();
coordinates.x = 100;
coordinates.y = 50;
Modifypoint(coordinates);
Console.WriteLine("Coordinates: " + coordinates.x + "; " + coordinates.y);
Console.ReadLine();
}
static void Modifypoint(point p)
{
p.x += 500;
p.y += 1500;
}