Operators

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intro

Types

Comparison Operators

Logical Operators

Mathematical operators

purpose

truth table (precedence)

Comparison operators

Is

TypeOf...Is

Like

Mathematical operators

You instruct the computer to perform a calculation by writing an arithmetic expression that contains one or more arithmetic operators.

Precedence Order	Mathematical Operator	Name	Description
1	^	Exponentiation	Raises a number to a power, e.g 5^3 means 5 * 5 * 5
2	-	Negation	Is used to indicate a negative number, e.g -5
3	* , /	Multiplication and Division	The Division operator is used to divide whole or decimal numbers and give a whole or decimal number answer
4	\	Integer Division	Is used to divide whole numbers and get a whole number answer (no decimals)
5	Mod	Modulus Arithmetic	Is used for division, but it returns the remainder of the division. Standard division and integer division tells you how many times a number will fit into another number, e.g. 2004 / 4 = 501 2004 Mod 4 = 0
6	+ , -	Addition and Subtraction

Tips:

*	Calculations are performed in the order specified by the operator's precedence, however
*	you can use parentheses ( ) to override the order of precedence
*	Operators that share precedence will be dealt with from left to right
*	The integer division operator is used to divide whole numbers and get a whole number answer
*	The division operator is used to divide whole or decimal numbers and get a decimal number answer
*	The modulus (Mod) operator is used for division, but returns the remainder of the division, whereas standard division and integer division tells you how many times a number will fit into another number.
*	The modulus operator is useful to calculate leap years.

Examples:

Calculations are performed in the order that is specified by the operator's precedence, e.g. 5 - 2 * 7 + 2 will be calculated as:

2 * 7 = 14

14 - 5 = 11

11 + 2 = 13

Operators that share precedence will be calculated from left to right:

5 + 3 - 7 + 2 - 3

-------------------->

You can override precedence by using parentheses. Whatever lies within the parentheses will be calculated first, e.g

(5 - 2) * (7 + 2):

5 - 2 = 3

7 + 2 = 9

3 * 9 = 27

How to remember the difference between the division operator ( / ) and the integer division operator ( \ ):

Let's use the value 123.45

/ The division operator leans over toward the decimals, which mean that decimals are included

\ The integer division operator leans toward the whole numbers, meaning that decimals are exluded

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