base and derived classes : Derived Class « Class « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Class
3. Derived Class

using System;
class Base {
   protected int i = 5;
   public void Print() {
      Console.WriteLine("i is {0}", i);
   }
}
class Derived : Base {
   double d = 7.3;
   public void PrintBoth() {
      Console.WriteLine("i is {0}, d is {1}", i, d);
   }
}
class Test {
   static void Main() {
        Base b = new Base();
        Console.WriteLine("b:");
        b.Print();

        Derived d = new Derived();
        Console.WriteLine("d:");
        d.Print();
        d.PrintBoth();
        Console.ReadLine();
  }
}