{{fbdoc item="title" value="#ASSERT"}}----
Preprocessor conditional directive

{{fbdoc item="syntax"}}##
	**#assert ** //condition//
##
{{fbdoc item="param"}}
	##//condition//##
	    A conditional expression that is assumed to be true

{{fbdoc item="desc"}}
	Asserts the truth of a conditional expression at compile time.  If ##//condition//## is false, compilation will stop with an error.

	This statement differs from the ##[[KeyPgAssert ASSERT]]## macro in that ##**#assert**## is evaluated at compile-time and ##[[KeyPgAssert ASSERT]]## is evaluated at run-time.

{{fbdoc item="ex"}}
{{fbdoc item="filename" value="examples/manual/prepro/assert.bas"}}%%(freebasic)
const MIN = 5, MAX = 10
#assert MAX > MIN '' cause a compile-time error if MAX <= MIN
%%

{{fbdoc item="diff"}}
	- New to ""FreeBASIC""

{{fbdoc item="see"}}
	- ##[[KeyPgAssert ASSERT]]##
	- ##[[KeyPgPpif #if]]##
	- ##[[KeyPgPperror #error]]##

{{fbdoc item="back" value="CatPgPreProcess|Preprocessor"}}