This one could be easily become one of the Job Interview Questions we publish here at Dev102.com, but I decided to write a “regular” post about this issue because it is an important concept and not a just a puzzle or a brain teaser. Take a look at the following code, can you tell what will the output be?
public class BaseType { public BaseType() { Console.WriteLine("Call base ctor."); DoSomething(); } public virtual void DoSomething() { Console.WriteLine("Base DoSomething"); } } public class DerivedType : BaseType { public DerivedType() { Console.WriteLine("Call derived ctor."); } public override void DoSomething() { Console.WriteLine("Derived DoSomething"); } } public class MainClass { public static void Main() { DerivedType derived = new DerivedType(); Console.ReadLine(); } }
The output of this program is:
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