static void Main(string[] args)
{
Triangle t1 = new Triangle(4.0,4.0,"isosceles");
Triangle t2 = new Triangle(8.0,12.0,"right");
Triangle t3 = new Triangle(t2);
Console.WriteLine("info for t1: ");
t1.showStyle();
t1.showDim();
Console.WriteLine("area is " + t1.area());
Console.WriteLine();
Console.WriteLine("info for t2: ");
t2.showStyle();
t2.showDim();
Console.WriteLine("area is " + t2.area());
Console.WriteLine();
Console.WriteLine("info for t3: ");
t3.showStyle();
t3.showDim();
Console.WriteLine("area is " + t3.area());
}
// copy constructor, c# style.
public Triangle(Triangle obj)
: base(obj)
{
m_style = obj.m_style;
}