operators

Question

how do you follow the operation eg x+=y--

Answer 1

that is called operator precedence.
You can look up a table in any language ;)
Here is the one for C
https://en.cppreference.com/w/c/language/operator_precedence

Answer 2

Rishabh Chatterjee For the example you gave, x will be incremented by the current value of y, and y will be decreased by 1.
In general, you follow order of operations and then go from left to right.

Answer 3

Int num1=8.
Int num2=42
Int num1__num2;