+= is the short-hand for adding to the current variable
-= is the short-hand for subtracting from the current variable
*= is the short-hand for multiplying by the current variable
/= is the short-hand for dividing the current variable
++var or var++ are the incremental operators (increase the value of the variable by 1).
–var or var– are the decremental operators (decrease the value of the variable by 1).
As usual, comment down below with any questions :).
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