4.4 Compound Assignment Operators

We’ve already discussed the = operator which sets the value of a variable. There are a few more assignment operators which are mostly used for convenience. These are the compound operators : +=, -=, *=, /=.

These operators apply their respective operation between the variable being assigned to and the value on the right and assign that value to the variable. In other words:

var += 2

can be read as

var = var + 2

and

var /= 2

can be read as

var = var / 2

etc..