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Conditional compilation directive that tests for a condition.




#IF test







An expression to test for. The expression may contain defined constants.


Conditional compilation is used to include parts of your program. This is a convenient way to build different files depending on some constant values.

Note that unlike the IF statement, the #IF directive does not expect a THEN.

You may nest conditions to 25 levels.

The use of #ELSE is optional.



See Also





Const DEMO = 1  ' 0 = normal , 1= demo

#If Demo

   Print "Demo program"


   Print "Full version"



Since the constant DEMO is assigned with the value 1, the compiler will compile only the line : Print "Demo program".

Code between #else and #endif is not compiled!

When you change the constant DEMO to 0, the other line will be compiled.