CBoolfunction

Converts numeric or string expression to a boolean (Boolean)

Syntax

Declare Function CBool ( ByVal expression As datatype ) As Boolean

Type typename

Declare Operator Cast ( ) As Boolean

End Type

Parameters

Name		Description
`expression`		a numeric, string, or user defined type to cast to a `Boolean` value
`datatype`		any numeric, string, or user defined type
`typename`		a user defined type

Return value

A Boolean value.

Description

The CBool function converts a zero value to False and a non-zero value to True.

The name can be explained as 'Convert to Boolean'.

If the argument is a string expression, it is converted to boolean using a case insensitive to the string "false" to return a False value or "true" to return a True value.

Remarks

Usage



result = CBool( numeric expression )

result = CBool( string expression )

result = CBool( user defined type )

Version

Since fbc 1.04.0

Dialect Differences

Not available in the -lang qb dialect unless referenced with the alias __Cbool.

Differences from QB

New to FreeBASIC

Example

' Using the CBOOL function to convert a numeric value



'Create an BOOLEAN variable

Dim b As Boolean



'Convert a numeric value

b = CBool(1)



'Print the result, should return True

Print b

Sleep

Reference

Documented in KeyPgCbool.html