Difference between revisions of "Boolean"

Revision as of 20:37, 10 June 2011

LOGICAL OPERATOR

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 8: / Line 8: @@
 :* 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 can be grouped using parentheses: <tt>()</tt>
+:* Use parentheses--<tt>()</tt>--to group expressions logically and to join multiple expressions.
-:* Parentheses are used in pairs. For each left parenthesis, there must be a right parenthesis. For example:
+:* Parentheses are used in pairs; each open parenthesis "(" requires a closing parenthesis ")".
-::<tt>((<expression1> && <expression2>) || <expression3>) && (<expression_4)</tt>
+:* For example:
+::  <tt>((<expression1> && <expression2>) || <expression3>) && (<expression_4)</tt>
 |}