Difference between revisions of "Boolean"

Revision as of 20:52, 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>))

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