C++ Interview Questions 3: Precedence of Operators

https://en.cppreference.com/w/cpp/language/operator_precedence

Notes:

(1) && is higher than ||

(2) the bitwise operators is higher than the logic ones: like & is higher than &&

(3) for bitwise operators: & > ^ > |

(4) << and >> are higher than bitwise and logic ones;

(5) << and >> are lower than +, -;

The following table lists the precedence and associativity of C++ operators. Operators are listed top to bottom, in descending precedence.

Precedence	Operator	Description	Associativity
1	::	Scope resolution	Left-to-right
2	a++   a--	Suffix/postfix increment and decrement
	type()   type{}	Functional cast
	a()	Function call
	a[]	Subscript
	.   ->	Member access
3	++a   --a	Prefix increment and decrement	Right-to-left
	+a   -a	Unary plus and minus
	!   ~	Logical NOT and bitwise NOT
	(type)	C-style cast
	*a	Indirection (dereference)
	&a	Address-of
	sizeof	Size-of[note 1]
	co_await	await-expression (C++20)
	new   new[]	Dynamic memory allocation
	delete   delete[]	Dynamic memory deallocation
4	.*   ->*	Pointer-to-member	Left-to-right
5	a*b   a/b   a%b	Multiplication, division, and remainder
6	a+b   a-b	Addition and subtraction
7	<<   >>	Bitwise left shift and right shift
8	<=>	Three-way comparison operator (since C++20)
9	<   <=	For relational operators < and ≤ respectively
	>   >=	For relational operators > and ≥ respectively
10	==   !=	For relational operators = and ≠ respectively
11	&	Bitwise AND
12	^	Bitwise XOR (exclusive or)
13	|	Bitwise OR (inclusive or)
14	&&	Logical AND
15	||	Logical OR
16	a?b:c	Ternary conditional[note 2]	Right-to-left
	throw	throw operator
	co_yield	yield-expression (C++20)
	=	Direct assignment (provided by default for C++ classes)
	+=   -=	Compound assignment by sum and difference
	*=   /=   %=	Compound assignment by product, quotient, and remainder
	<<=   >>=	Compound assignment by bitwise left shift and right shift
	&=   ^=   |=	Compound assignment by bitwise AND, XOR, and OR
17	,	Comma	Left-to-right