=

assigns the right-hand expression to the left-hand variable (a = 3)

+

adds two numbers or text strings (a + 3)

-

subtracts a number from another number (a - 3)

*

multiplies two numbers

**

power / involution / division

/

division

x++

increases the x variable by one

x--

decreases the x variable by one

x += 7

adds 7 to the value in x

x -= 7

subtracts 7 from the value in x

x *= 7

multiplies the value in x with 7

x /= 7

divides the value in x with 7

==

equal

<>

not equal

<

less than

>

greater than

<=

less or equal

>=

greater or equal

AND

logical AND operator; TRUE if the two expressions are both TRUE, otherwise FALSE. It is possible to use && instead of AND

OR

logical OR operator; TRUE if either of the two expressions are TRUE, otherwise FALSE It is possible to use || instead of OR

NOT

logical NOT operator; reverses the result of a logical expression