precompile marco: define, undef, elif, endif : Preprocessor Directives « Language Basics « C# / C Sharp

1. C# / C Sharp
2. Language Basics
3. Preprocessor Directives

precompile marco: define, undef, elif, endif

 

#define MYOWN
#define DEBUG
#undef VERBOSE

using System;
class Operators {
    static void Main() {
#if MYOWN
        Console.WriteLine("Hi!");
#elif VERBOSE
   Console.WriteLine("Program Starting?);
#endif
        int a = 10, b = 5;
#if DEBUG
        Console.WriteLine("a={0}, b={1}", a, b);
#endif
#if MYOWN && (VERBOSE || DEBUG)
        Console.WriteLine("Continuing, Author");
#elif !MYOWN && (VERBOSE || DEBUG)
   Console.WriteLine("Continuing?);
#endif
    }
}

 

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6.	#undef, #elif, and #else preprocessor directives
7.	Demonstrate #if, #endif, and #define
8.	Use a symbol expression
9.	Demonstrate #else
10.	Demonstrate #elif
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