Boolean Operators are used to combine the logical expressions to produce a single output. Logical expression is a combination of one or more operands with a relational operator.
Logical expression output is either true or false. Below are the list of Boolean operators –
| Operator | Description | Syntax |
|---|---|---|
| NOT | Negotiation of logical expression with NOT | NOT log_exp |
| AND | True when all the logical expressions are combined with AND are true | log_exp1 AND log_exp2 AND log_exp3 … |
| EQUIV | True when all the logical expressions are combined with EQUIV are true or false | log_exp1 EQUIV log_exp2 … |
| OR | True when all the logical expressions are combined with OR are true or any one of the logical expression is true | log_exp1 OR log_exp2 OR log_exp3 … |
Below table describes how the AND, OR, XOR and NOT operations worked on boolean operators –
| Logical Expression (LE1) | Logical expression (LE2) | LE1 AND LE2 | LE1 OR LE2 | LE1 EQUIV LE2 | NOT LE1 | NOT LE2 |
|---|---|---|---|---|---|---|
| False | False | False | False | True | True | True |
| False | True | False | True | False | True | False |
| True | False | False | True | False | False | True |
| True | True | True | True | True | False | False |
Example –
Below example shows how the Boolean operations coded in the program.
Code –
*&---------------------------------------------------------------------*
*& Report Z_BOOLEAN_OPERATORS
*&---------------------------------------------------------------------*
*& Written by TutorialsCampus
*&---------------------------------------------------------------------*
REPORT Z_BOOLEAN_OPERATORS.
* Declaring Variables
DATA: W_OP1 TYPE I VALUE 40,
W_OP2 TYPE I VALUE 60,
W_OP3 TYPE I VALUE 80.
* Logical AND expression
IF ( W_OP1 LT W_OP2 ) AND ( W_OP2 LT W_OP3 ).
WRITE 'Both logical expressions are true'.
ELSE.
WRITE 'Both logical expressions are not true'.
ENDIF.
* Logical NOT operator
IF NOT ( W_OP2 GT W_OP3 ).
WRITE /'W_OP2 LESS THAN W_OP3'.
ENDIF.
* Logical OR operator
IF ( W_OP1 LT W_OP2 ) OR ( W_OP2 GT W_OP3 ).
WRITE /'Either one of the logical expression is true'.
ELSE.
WRITE /'Neither one of the logical expression is true'.
ENDIF.
Output –
Explaining Example –
In the above example, each and every statement is preceeded with a comment to explain about the statement. Go through them to get clear understanding of example code.
IF ( W_OP1 LT W_OP2 ) AND ( W_OP2 LT W_OP3 ), verifies ( W_OP1 LT W_OP2 ) and ( W_OP2 LT W_OP3 ) are true or not. If true, displays ‘Both logical expressions are true’. otherwise, ‘Both logical expressions are not true’ gets displayed.
IF NOT ( W_OP2 GT W_OP3 ), verifies ( W_OP2 GT W_OP3 ) expression output is false not. If false, displays ‘W_OP2 LESS THAN W_OP3’.
IF ( W_OP1 LT W_OP2 ) OR ( W_OP2 GT W_OP3 ), verifies either ( W_OP1 LT W_OP2 ) or ( W_OP2 GT W_OP3 ) are true or not. If true, displays ‘Either one of the logical expression is true’. otherwise, ‘Neither one of the logical expression is true’ gets displayed.