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 the credit of 'the customer' is less than -100 then print "The customer is overdrawn";
`<number> + <number>`	Adds a number to another number.	if there is at least one purchase event then set the flow rate of 'the customer' to the flow rate of 'the customer' + 100;
`<number> - <number>`	Subtracts a number from another number.	if the number of purchase events - the number of purchase returned events 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.)	definitions set 'purchase event count' to the number of purchase events; set 'total amount' to the total amount of all purchase events; if 'purchase event count' is more than 0 then set the average amount of 'the customer' to 'total amount' / 'purchase event count';
`<number> * <number>`	Multiplies a number by another number.	when a purchase event occurs definitions set 'sales tax' to 0.2; if the amount of this purchase event * 'sales tax' is more than 100 then...
`<text> + <text>`	Concatenates two strings.	definitions set 'first name' to the first name of 'the customer'; set 'last name' to the last name of 'the customer'; then print "Full name" + 'first name' + " " + 'last name';
`<number> + <text>`	Concatenates a number and a string. The result is treated as a string.	when a purchase event occurs, called 'the purchase' then print "You spent " + the amount of 'the purchase' + " Euros";
`<text> + <number>`	Concatenates a string and a number. The result is treated as a string.	when a purchase event occurs, called 'the purchase' then print "You spent $“ + the amount of 'the purchase';