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<tt>LOGICAL OPERATOR</tt>
<tt>LOGICAL_OPERATOR</tt>
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Logical operators can be used to build more complex expressions.
The logical operators are:  
The logical operators are:  
:<tt>&&</tt> Logical AND (and)
:<tt>&&</tt> Logical AND (and)

Revision as of 20:51, 10 June 2011

LOGICAL_OPERATOR

Logical operators can be used to build more complex expressions. The logical operators are:
&& Logical AND (and)
|| Logical OR (or)
Considerations
  • Two subexpressions joined by a logical operator form a logical expression.
  • Logical expressions resolve to a Boolean value: 1/0 or TRUE/FALSE.
  • Use parentheses--()--to group expressions logically and to join multiple expressions.
  • Parentheses are used in pairs; each open parenthesis "(" requires a closing parenthesis ")".
  • For example:
((<expression1> && <expression2>) || (<expression3> && <expression_4>))