The script is Use the following operators:
Arithmetic Operators
+  Binomial addition operator         a = 1 ; b = 1 ; c 
= a + b ;         //The result is c = 2. 
-   
Binomial subtraction operator  a = 4 ; b = 2 ; c = a – b ;         //The result is c = 2.
*   Multiplication operator               a = 3 ; b = 7 ; c = a * b ;          //The result is c = 21.
/   
Division operator                         a = 21 ; b = 3 ; c = a / b ;          //The result is c = 7.
% 
Remainder operator                   a = 11 ; b = 3 ; c = a % b ;                //The result is c = 2.
&  
AND operator                            a = 1 ; char b = 14 ; c = a & b ;        //This is the 
bitwise operator, 
so (char 1 byte) a = 00000001, b = 00001110, and the result of a & b = 00000001 
& 00001110 is c = 00000000. 
|   OR operator 
                             a = 1 ; char b = 
14 ; c = a | b ;          //This is the 
bitwise operator, so (char 1 byte) a = 00000001, b = 
00001110, a & b = 00000001 | The result of 00001110 is c = 00001111. 
^  
XOR operator                            a = 1 ; char b = 14 ; c = a ^ b ;    //This is the 
bitwise operator, 
so (char 1 byte) a = 00000001, b = 00001110, and the result of a & b = 
00000001^00001110 is c = 00001111. 
 
Substitution Operators
= Substitution, assignment operators
Comparison Operators
==  Equals
>    big
>=  greater than or equal to
<    small
<=  less than or equal to
!=   is not equal to
Logical Operators: This is mainly used in conditional statements.
&& Logical Conjunction Operator. (AND) if ( $DI_0001 == ON && $DI_0002 == ON ) //Conditions when the digital input signal DI_0001 and DI_0002 are ON at the same time
|| Logical Disjunction Operator (OR) if ( $DI_0001 == ON || $DI_0002 == ON ) //Conditions when either the digital input signal DI_0001 or DI_0002 is ON.
Related Helps)