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80 lines
1.9 KiB
Markdown
80 lines
1.9 KiB
Markdown
The [AND (boolean)](AND-(boolean)) conditonal operator is used to include another evaluation in an [IF...THEN](IF...THEN) or [Boolean](Boolean) statement.
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## Syntax
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> IF condition [AND (boolean)](AND-(boolean)) condition2
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## Description
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* If condition [AND (boolean)](AND-(boolean)) condition2 are true then the evaluation returns true (-1).
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* condition and condition2 can also contain their own AND evaluations.
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* Both the IF evaluation and the AND evaluation must be true for the statement to be true.
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* Statements can use parenthesis to clarify an evaluation.
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* [AND (boolean)](AND-(boolean)) and [OR (boolean)](OR-(boolean)) cannot be used to combine command line operations.
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* Not to be confused with the [AND](AND) and [OR](OR) numerical operations.
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**Relational Operators:**
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| Symbol | Condition | Example Usage |
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| -- | -- | -- |
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| = | Equal | IF a = b THEN |
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| <> | NOT equal | IF a <> b THEN |
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| < | Less than | IF a < b THEN |
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| > | Greater than | IF a > b THEN |
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| <= | Less than or equal | IF a <= b THEN |
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| >= | Greater than or equal | IF a >= b THEN |
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## Example(s)
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Using AND in an IF statement.
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```vb
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a% = 100
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b% = 50
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IF a% > b% AND a% < 200 THEN PRINT "True"
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```
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```text
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True
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```
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*Explanation:* Both condition evaluations must be true for the code to be executed.
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Using a AND a more complex way.
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```vb
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a% = 100
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b% = 50
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c% = 25
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d% = 50
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e% = 100
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IF (a% > b% AND b% > c%) AND (c% < d% AND d% < e%) THEN
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PRINT "True"
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ELSE
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PRINT "False"
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END IF
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```
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```text
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True
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```
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*Explanation:* The evaluations in the paranteses are evaluated first then the evaluation *of* the paranteses takes place, since all evaluations return True the IF...THEN evaluation returns True. If any of the evaluations returned False then the IF...THEN evaluation would also return False.
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## See Also
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* [AND](AND), [OR](OR) (logical operators)
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* [OR (boolean)](OR-(boolean)), [XOR (boolean)](XOR-(boolean))
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* [IF...THEN](IF...THEN)
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