public static void Main(string[] args)
 {
     Triangle T = new Triangle ();
     int a;
     int b;
     int c;
     Console.WriteLine ("Enter side 1:");
     a = int.Parse (Console.ReadLine ());
     Console.WriteLine ("Enter side 2:");
     b = int.Parse (Console.ReadLine ());
     Console.WriteLine ("Enter side 3:");
     c = int.Parse (Console.ReadLine ());
     T.setSides (a, b, c);
     Console.WriteLine ("triangle type is: {0}", T.getType());
 }