Listing 3

using namespace System;

int main()
{
    Point::TraceID = true;

    Point p1, p2(3,7), p3(9,1), p4 = p2;
    Console::WriteLine("p1 = {0}", p1);
    Console::WriteLine("p2 = {0}", p2);
    Console::WriteLine("p3 = {0}", p3);
    Console::WriteLine("p4 = {0}", p4);
    p2 = p1;
    Console::WriteLine("p2 = {0}", p2);
}