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using C=System.Console;<br />

class MainClass<br />

{<br />

public static void Main(string[] args)<br />

{<br />

C.WriteLine("Hello World!");<br />

}<br />

}<br />

C.Read();<br />

Systemet svarer tildels til #define sætninger i C og C++.<br />

User Defined namespace:<br />

Et eksempel på et ’user defined’ namespace kunne være følgende hvor alt er samlet summarisk i en<br />

enkelt fil:<br />

//fil: namespace.cs<br />

//demonstrerer nestede namespaces i 3 lag:<br />

using System;<br />

namespace Ydre{<br />

using System;<br />

}<br />

class app<br />

{<br />

public class Y{}<br />

namespace Midterste{<br />

using System;<br />

}<br />

public static void Main(string[] args)<br />

{<br />

//Y y=new Y() - giver fejl:<br />

Ydre.Y y=new Ydre.Y();<br />

public class Midter{}<br />

namespace Inderste{<br />

using System;<br />

}<br />

public class Inderst{}<br />

public class Sidste{}

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