DIRECTIVEPublished

#else and #endif

#ifdef <id> ... #else ... #endif

Provides the alternative path and closes conditional compilation blocks.

Compilação condicionalPré-processadorBlocos

01 · OVERVIEW

Overview

#else separates the alternative for #ifdef or #ifndef, and #endif closes the block. Unlike runtime If/Else/EndIf, these directives select source text before compilation.

02 · SYNTAX

Syntax

#ifdef <id> ... #else ... #endif

03 · PRACTICAL EXAMPLE

Two compilation variants

User Function ExAlternativa()
#ifdef VERSAO_ESPECIAL
    MsgInfo("Recurso da versão especial")
#else
    MsgInfo("Comportamento padrão")
#endif
Return

Expected result

Only the matching alternative reaches the compiler.

BEST PRACTICES

Indent content to expose the conditional structure.
Keep opening and closing directives close when practical.

COMMON PITFALLS

They do not replace runtime Else and EndIf.
Deeply nested blocks obscure which variant was compiled.

#else and #endif

Overview

Syntax

Two compilation variants

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