OR (boolean) - QB64 Wiki

OR (boolean)

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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.
  • AND and OR cannot be used to combine command line operations.
  • A double OR syntax error may be ignored and create a QB64 compiler error!
  • Not to be confused with the AND and OR numerical operations.


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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