C-language operator precedence, binding (left/right combination) __c language

Back to the C language, feel that the combination of C language operators it is necessary to mention, after all, last year I just learned the C language, I did not understand the problem of integration.

What is left binding. What is the right combination. What are they used for? When they were used.

This article will focus on these issues.

(Small Bai, great God bypass)

First of all, appendix A few of your own learning process reference website. (Some insights and examples from the website)

Http://wenku.baidu.com/link?url=W2ofiBx4yEtrxAAfV8lUaR-bYSIuBox1_ Dh-1mg6g6q0venbr31ofklauxrq6arqmjeo-r1hvvybjxvvvtfasi5cxi4merolvxzs3yzrtis

Http://c.chinaitlab.com/basic/873233.html

http://bbs.csdn.net/topics/370153775

before talking about the binding, first mention the C language operator and its precedence relationship.

C-language operator precedence

Priority Level	operator	name or meaning	Use Form	Combining Direction	Description
1	[]	Array subscript	array name [constant expression]	Left to right	--
()	Parentheses	(expression)/function name (formal parameter list)	--
.	Member selection (object)	Object. Member name	--
->	Member selection (pointers)	Object pointer-> member name	--
2	-	Minus sign operator	-An expression	right to left	Monocular operator
~	Bitwise inverse operator	~ Expression
++	Self-increasing operator	+ + variable name/variable name + +
--	Self-subtraction operators	--Variable name/variable name--
*	Value operator	* Pointer variable
&	Take address operator	& Variable Name
!	Logical non-operator	! An expression
(type)	Force type conversions	(data type) expression	--
sizeof	Length operator	sizeof (expression)	--
3	/	Except	An expression/expression	Left to right	Binocular operator
*	By	Expression * Expression
%	Remainder (modulo)	Integral expression% integer expression
4	+	Add	expression + expression	Left to right	Binocular operator
-	Reducing	Expression-An expression
5	<<	Move left	Variables << expressions	Left to right	Binocular operator
>>	Move right	Variables >> expressions
6	>	Greater than	Expressions > expressions	Left to right	Binocular operator
>=	Greater than or equal to	Expression >= An expression
<	Less than	Expressions < expressions
<=	Less than or equal to	Expression <= An expression
7	==	Equals	expression = = Expression	Left to right	Binocular operator
. =	Not equal to	Expression!= An expression
8	&	Bitwise AND	Expressions & Expressions	Left to right	Binocular operator
9	^	Per-bitwise XOR OR	expression ^ expression	Left to right	Binocular operator
Ten	|	by bit or	Expressions-Expressions	Left to right	Binocular operator
One	&&	Logic and	Expressions && Expressions	Left to right	Binocular operator
of	||	Logical OR	expression | | An expression	Left to right	Binocular operator
of	?:	Conditional operator	Expression of 1? Expression 2: Expression 3	right to left	Three-mesh operator
-	=	Assignment operator	variable = expression	right to left	--
/=	Assign value in addition to	Variable/= expression	--
*=	After multiplication assign value	Variable *= expression	--
%=	To assign a value after taking a model	Variable%= expression	--
+=	Add and then assign value	Variable = = Expression	--
-=	After minus assignment	Variable-= expression	--
<<=	Assign values after left shift	Variable <<= expression	--
>>=	Assign value after right shift	Variable >>= expression	--
&=	Bitwise AND Post-assignment	Variable &= expression	--
^=	Assign values by bitwise OR after	Variable ^= expression	--
|=	Bitwise OR post-value assignment	Variable |= expression	--
-	,	Comma operator	expressions, Expressions,...	Left to right	--

Description:

  

operators are divided into 15-level, 1-level priority highest, 15-level priority lowest.

operator of the same priority, the order of operations is determined by the binding direction. (Binding: 2 13 14 is from right to left the other is from left to right)
The simple note is:. > Arithmetic operators > Relational operators > && > | | > Assignment Operators

a little more detail, with a formula. (found on the Internet)

Bracket member first                //bracket operator [] () member operator.
/strong> All monocular second              //all monocular operators such as + +,--、 + (positive),-(negative), pointer operation *, & Division and Division Yusan, plus minus four;        /This "Yu" refers to the remainder operation that is%