What is the operator precedence rule in C language?

C language operator priority order is: bracket members first; all single items second; multiplication and division remainder three, addition and subtraction four; shift five, relationship six; equality (and) inequality ranking Seven; bitwise AND, XOR and bitwise OR, "three-thirds of the world" eighty or ninety; logical OR and AND, twelve and eleven; condition is higher than assignment; comma operation level is the lowest.

There are fifteen priorities in total:

## 2(Type)--##exceptexpression/expressionleft to rightBinary operator*Multiplyexpression*expressionbinary operator%Remainder (modulo)Integer expression/integer expressionBinary operation Symbol4plusExpression expressionLeft to right##> is greater than Expression>ExpressionLeft to right##less thanexpression

binary operator <=less than or equal toExpression< ;=expressionbinary operator##7!=##&&Logic andExpression&&expressionLeft to rightBinary operator12||##1314##Assignment after bitwise ANDVariable&=Expression^=Assignment after bitwise XORVariable^=expression|=##15

Priority	Operator	Name or meaning	Used form	Combined direction	Description
1	[]	Array subscript	Array name [constant expression]	Left to right
	()	Parentheses	## (expression)/function name (parameter list)
	.	Member Select(object)	Object.Member name
	##->	Member selection (pointer)	Object pointer->Member name
##-	Negative operator	-expression	Right to left	Unary operator
	Forced type conversion	(data type) expression
	Increment operator	Variable name/variable name	Single Operator
	Decrement operator	--Variable name/Variable name--	Unary operator
	*	Value operator	*Pointer variable		Unary operator
	&	Get address operator	& variable name		Unary operator
	!	Logical NOT operation Symbol	!Expression		Unary operator
	~	Bitwise negation operator	~Expression		Unary operator
	sizeof	length operator	sizeof(expression)
##3	/
					Binary Operator
	-	Minus	Expression-expression		Binary operator
5	<<	Shift left	Variable<	Left to right	Binary operator
	##>>	Shift right	Variable>>Expression		Binary operator
6					Binary Operator
	>=	Greater than or equal to	expression>=expression		binary operator
	# #<
==	equal to	expression==expression	left to right	Binary operator
	is not equal to	expression!= expression	binary operator
8	&	## bitwise and	Expression&expression	Left to right	Binary operator
9	^	Bitwise XOR	Expression^Expression	Left to right	Binary operator
10	|	bitwise OR	expression|expression	Left to right	Binary operator
##11
	##Logical or	Expression||Expression	Left to right	Binary operator
?:	Conditional operator	Expression 1 ? Expression 2: Expression 3	right to left	ternary operator
=	Assignment operator	Variable = expression	right to left
	/=	Assignment after division		Variable/=Expression
	*=	Multiply and assign value		Variable*=expression
	%=	Assign a value after taking the modulus		Variable% =Expression
	=	Assignment after addition		Variable = expression
	-=	Assignment after subtraction		Variable-=Expression
	<<=	Assign value after left shift		Variable<<=expression
	#>>=	Assign value after right shift		Variable>>=expression
	&=
	##Assignment after bitwise OR	Variable|=Expression
,	Comma operator	Expression, expression,...	Left to right	Operations sequentially from left to right

##Instructions:

For operators with the same priority, the order of operations is determined by the combination direction.

Function:

##Bracket members no. 1; //Bracket operator []() Member operator. ->
All unary operators Second; //All unary operators such as, --, ( Positive), -(negative), pointer arithmetic*, &
multiplication and division with remainder three, addition and subtraction four; //This "remainder" refers to the remainder operation, that is, %
Shift five, relationship six; //Shift operator: << >>, relationship: > < >= <= etc.
Equal (and) is not equal to the seventh; //that is, == and!=
bitwise AND, XOR and bitwise OR; //These are all It is a bitwise operation: Bitwise AND (&) XOR (^) Bitwise OR (|)

• "三三天下"八九十;

Logical OR and AND ; ;
• The condition is higher than the assignment, //The ternary operator's priority is ranked 13th, only higher than the assignment operator and ","
  The comma operation level is the lowest! //Comma Operator has the lowest precedence

• #

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