Use a symbol expression : Preprocessor Directives « Language Basics « C# / C Sharp

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2. Language Basics
3. Preprocessor Directives

Use a symbol expression

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Use a symbol expression. 
 
#define EXPERIMENTAL 
#define TRIAL 
 
using System; 
 
public class Test2 { 
  public static void Main() { 
     
    #if EXPERIMENTAL 
      Console.WriteLine("Compiled for experimental version."); 
    #endif 
 
    #if EXPERIMENTAL && TRIAL 
       Console.Error.WriteLine("Testing experimental trial version."); 
    #endif 
   
    Console.WriteLine("This is in all versions."); 
  } 
}


           
       

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