Difference between revisions of "OR (boolean)"

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* OR adds an alternative to another conditional evaluation. IF True then the statement evaluation is True.
 
* OR adds an alternative to another conditional evaluation. IF True then the statement evaluation is True.
 
* Parenthesis may be used to clarify the order of comparisons in an evaluation.
 
* Parenthesis may be used to clarify the order of comparisons in an evaluation.
* '''An OR OR statement will create a QB64 compiler error!'''
+
* '''A duplicate OR OR statement will create a QB64 compiler error!'''
 
* Can be confused with the [[OR]] numerical operator.
 
* Can be confused with the [[OR]] numerical operator.
  

Revision as of 00:21, 7 August 2013

The OR coditional operator adds an alternative in a IF...THEN or Boolean statement.


Syntax

IF a = 1 OR a = 2 THEN a = 0


  • OR adds an alternative to another conditional evaluation. IF True then the statement evaluation is True.
  • Parenthesis may be used to clarify the order of comparisons in an evaluation.
  • A duplicate OR OR statement will create a QB64 compiler error!
  • Can be confused with the OR numerical operator.


Relational Operators:
Symbol Condition Example Usage
<  Less than  IF a < b THEN
>  Greater than  IF a > b THEN
=  Equal  IF a = b THEN
<=  Less than or equal  IF a <= b THEN
>=  Greater than or equal  IF a >= b THEN
<>  NOT equal  IF a <> b THEN


Example:

a% = 100 b% = 50 IF (a% > b% AND a% < 100) OR b% = 50 THEN PRINT "True"

True

Explanation: The first evaluation was False, but the OR evaluation made the statement true and the code was executed.


See also:



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