The Increment and Decrement Operators (++ and - - )

Hi all !
Even if i do understand how ++ and -- operators works fine (as a pre-modifers and post-modifers) but i can't understand how do they got the HIGHTEST precedence (unary operators) over than other operators , consider the follwing examples :
Ex(1):
======
initially : x = 5 & y = 0;
y = x++ ;
i know the process goes like this :
- Evaluation : Left-to-Right (y is 0 and x is 5)
- Operation : assignement of x to y , then increment x by 1.
Q(1) is : why do assignment first then increment even if operator ++ has higher precendence than "=" operator.
(i understand that that is true if y=++x, but why? ).
Ex(2):
======
initially : x=5 & y =0;
y = x++ + 5;
y now is 10 , x now is 6
Q(2) is : even if the ++ operator is higher in precedence ,the arithmetic operator "+" is evaluated first, why?
(same applies to the -- operator)
Thanks ...

Q(1) is : why do assignment first then increment even
if operator ++ has higher precendence than "="
operator.
(i understand that that is true if y=++x, but why? ).The assignment is not performed first:
(1) Memory is reserved to store the result of the expression on the right hand side.
(2) The expression evaluates to the current value of x, which is 5. This value is stored away.
(3) x is incremented, and is now equal to 6.
(4) The value previously stored away is assigned to y. y is now 5.
Q(2) is : even if the ++ operator is higher in
precedence ,the arithmetic operator "+" is evaluated
first, why?The + operator is not evaluated first:
(1) Memory is reserved to store the result of the expression on the right hand side.
(2) The current value of x is stored in that reserved memory. The value is 5.
(3) x is incremented to 6.
(4) 5 is added to the expression result, and the result is now 10.
(5) The expression result is assigned to y. y is now 10.
Note that the implementation is free to perform the calculation however it wishes, so long as it is done such that the user/programmer can not tell the difference.

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Attachments:
main components.vi ‏7 KB

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Incremental_BD.png ‏7 KB

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The Increment and Decrement Operators (++ and - - )

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