Metrologic IS1000 Series Guia do Utilizador descarregar pdf (Página 24)

CipherLab BASIC Compiler

User's Guide

4.3.2 Arithmetic Operator

The arithmetic operators are:

Operator Operation Sample Expression

^ Exponentiation A% = 9^3

- Negation (unary) A% = -B%

* Multiplication A! = B! * C!

\ Division (integer) A% = B! \ C!

/ Division (real) A! = B! / C!

+ Addition A% = B% + C%

- Subtraction A% = B% - C%

MOD Modulo arithmetic A% = B% MOD C%

4.3.3 Relational Operator

Relational operators are used to compare two values. The result of the comparison is either

"True" or "False". This result may then be used to make a decision regarding program flow.

Operator Operation Sample Expression

= Equality A% = B%

<> Inequality A% <> B%

>< Inequality A! >< B!

> Greater than A% > B!

< Less than A! < B!

>= Greater than or equal to A% >= B%

<= Less than or equal to A% <= B%

4.3.4 Logical Operator

Logical operators perform tests on multiple relations and Boolean operations. The logical

operator returns a bit-wise result which is either "True" (not zero) or "False" (zero). In an

expression, logical operations are performed after arithmetic and relational operations.

Operator Operation Sample Expression

NOT Logical negation IF NOT (A% = B%)

AND Logical and IF (A% = B%) AND (C% = D%)

OR Inclusive or IF (A% = B%) OR (C% = D%)

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Metrologic IS1000 Series Guia do Utilizador Página 24