static void Main(string[] args) { Phanso t = new Phanso(); t.nhap(); t.hien(); Phanso t2 = new Phanso(); t2.nhap(); t2.hien(); Phanso t3 = t + t2; t3.hien(); Phanso t4 = t * t2; t4.hien(); if (t > t2) { Console.WriteLine("ps t1>t2"); } else if (t < t2) { Console.WriteLine("ps t1<t2S"); } else Console.WriteLine("hai ps = nhau"); Console.ReadKey(); }