Operators

Operators are used to manipulate variable and field values and to control the
logical program flow based on the values in variables and fields. The following
types of operators are available.• Assignment operators modify the contents of a variable or field.• Arithmetic operators perform mathematical operations on the values
in a variable or field.• Relational operators evaluate how two values relate to one another
and return either True or False according to the result.Assignment OperatorsAssignment operators modify the contents of a variable or field. The following
table defines available operators.

Operator	Description
=	Assigns the expression on the right of the equal sign to the variable on the left.
+=	Increments the variable on the left by the value on the right.
++	Increments the variable on the left by one.
-=	Decrements the variable on the left by the value on the right.
--	Decrements the variable on the left by one.

Best Regards,
Hossein Karimi