CBool
 
Converts numeric or string expression to a boolean (Boolean)

Syntax

Declare Function CBool ( ByVal expression As datatype ) As Boolean

Type typename
End Type

Usage

result = CBool( numeric expression )
result = CBool( string expression )
result = CBool( user defined type )

Parameters

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.

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


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

See also