Embedded Basics-C language (3)-Priority

Source: Internet
Author: User
Tags bitwise

Priority 1-Special symbol "" ().     2-monocular operation + +--!            ~ & * (type) sizeof ()-3-Binocular operation 1) arithmetic operation +-*/% 2) shift operation 3) relational Operation 4) bitwise operation 5) Logical Operation 4-three mesh operation 5-assignment Operation 6-comma operation

Priority level

Operator

Name or meaning

Use form

Combination 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 (pointer)

Object pointers, member names

2

-

Minus sign operator

-expression

Right to Left

Monocular operator

(Type )

Forcing type conversions

(data type ) expression

++

Self-increment operator

+ + variable name /variable name + +

Monocular operator

--

Self-decrement operator

--Variable name /variable name --

Monocular operator

*

Value operator

* Pointer variable

Monocular operator

&

Fetch address operator

& Variable Name

Monocular operator

!

Logical non-operator

! An expression

Monocular operator

~

Bitwise inverse operator

~ Expression

Monocular operator

sizeof

Length operator

sizeof (expression )

3

/

Except

An expression /expression

Left to right

Binocular operator

*

By

Expression-expression *

Binocular operator

%

Remainder (modulo)

Integer expression /integer expression

Binocular operator

4

+

Add

An expression + an expression

Left to right

Binocular operator

-

Reducing

Expression -expression

Binocular operator

5

<<

Move left

Variables << Expressions

Left to right

Binocular operator

>>

Move right

Variables >> Expressions

Binocular operator

6

>

Greater than

Expressions > Expressions

Left to right

Binocular operator

>=

Greater than or equal

Expression- >= expression

Binocular operator

<

Less than

Expressions < Expressions

Binocular operator

<=

Less than or equal

Expression- <= expression

Binocular operator

7

==

Equals

Expression- = = Expression

Left to right

Binocular operator

!=

Not equal to

Expression! = Expression

Binocular operator

8

&

Bitwise-AND

Expressions & Expressions

Left to right

Binocular operator

9

^

Bitwise XOR OR

An expression ^ expression

Left to right

Binocular operator

10

|

Bitwise OR

Expression- expression

Left to right

Binocular operator

11

&&

Logic and

Expressions && Expressions

Left to right

Binocular operator

12

||

Logical OR

An Expression | | An expression

Left to right

Binocular operator

13

?:

Conditional operators

Expression 1-expression 2: Expression 3

Right to Left

Trinocular operator

14

=

Assignment operators

Variable = Expression

Right to Left

/=

Assign value after addition

Variable -/= expression

*=

Multiply post-Assign value

Variable -*= expression

%=

Assign value after modulo

Variable -%= expression

+=

Add after Assignment

Variable + = Expression

-=

Reduced-value Assignment

Variable -= Expression

<<=

Assign value after left shift

Variable -<<= expression

>>=

Assign value after right shift

Variable ->>= expression

&=

Bitwise AND post-assigned values

Variable -&= expression

^=

Bitwise XOR or post-assignment

Variable -^= expression

|=

Bitwise OR post-assigned value

Variable -|= expression

15

,

Comma operator

Expression , expression ,...

Left to right

Left-to-right sequential operation

Embedded Basics-C language (3)-Priority

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