#if
Preprocessor conditional directive
Syntax
`
#if (expression)
' Conditionally included statements
#endif
`
Description
Conditionally includes statements at compile time.
Statements contained within the `#if` / `#endif` block are included if `expression` evaluates to True (non-zero) and excluded (ignored) if `expression` evaluates to False (`0`).
This conditional directive differs from the `If` conditional statement in that `#if` is evaluated at compile-time and `If` is evaluated at run-time.
Example
`
#define DEBUG_LEVEL 1
#if (DEBUG_LEVEL >= 2)
' This line is not compiled since the expression is False
Print "Starting application"
#endif
`
Differences from QB

- New to FreeBASIC

See also

- `#define`
- `#macro`
- `#else`
- `#elseif`
- `#endif`
- `#ifdef`
- `#ifndef`
- `#undef`
- `defined`
- `#assert`