Arithmetic operators

Arithmetic operators perform operations on numbers and text. You can use them in variable definitions, conditions, and actions.

Table 1. Arithmetic operators
Operator Description Example
- <number> Makes a number negative. 
if
   there is more than one error
then
   set 'status code' to - the number of errors;
<number> + <number> Adds a number to another number. 
if
   there is at least one additional driver
then
   set the rental cost of the car to the base rental cost of the car + 100;
<number> - <number> Subtracts a number from another number. 
if
   the number of ’items purchased’ - the number of ’items returned’ is more than 0
then...
<number> / <number>

Divides a number by another number.

If both numbers are integers, the result is also an integer (the result of the division without the remainder.)

 
if
   there is at least one order
then
set the average order quantity to the number of items ordered / the number of orders;
<number> * <number> Multiplies a number by another number. 
if
   the price of the item * ’sales tax’ is more than 100
then...
<text> + <text> Concatenates two strings. 
definitions
   set 'full name' to ’first name’ + ’ ’ + ’last name’
<number> + <text> Concatenates a number and a string. The result is treated as a string. 
if
   the order total is less than ’discount threshold’
then
   display the message: "Spend just $“ + (’discount threshold’ - order total) + ” more to receive a 10% discount!”;
<text> + <number> Concatenates a string and a number. The result is treated as a string. 
if
   the order total is more than 'discount threshold'
then
   apply a 10% discount;
   display the message: "You received a 10% discount because your order was over $" + 'discount threshold' ;