#IFNDEF


Preprocessor conditional directive

Syntax:
#ifndef symbol
' Conditionally included statements
#endif

Description:
Conditionally includes statements at compile time.

Statements within the #ifndef...#endif block are included if symbol is not defined and excluded (ignored) if symbol is defined.

#ifndef symbol is equivalent to #if Not defined(symbol)

Examples:
#IFNDEF __MYFILE_BI__
#DEFINE __MYFILE_BI__
    ' Declarations
#ENDIF


Differences from QB:
See also:
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