Question 1
Postfix and prefix increment operator priority issue.
Answer
Postfix increment / decrement operators have MORE priority than prefix increment / decrement operators.
Postfix increment / Decrement operator : Associativity -> Left to Right
Prefix increment / Decrement operator : Associativity -> Right to Left
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Question 2
Pointer Subtraction
Answer
* Pointer subtraction (address subtraction) gives the "distance" between two objects.
* These Two objects must be of same type (two objects can be of different base type but in this case their diff makes little sense.)
* The operation is signed Arithmetic
* Depending on the languages and its Implementation, The result is "negative" if the first operand is stored at lower address than the second operand (at higher address.)
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