Operator precedence determines the
grouping of terms in an expression and decides how an expression is evaluated.
Certain operators have higher precedence than others; for example, the
multiplication operator has a higher precedence than the addition operator.
For example, x = 7 + 3 * 2; here, x
is assigned 13, not 20 because operator * has a higher precedence than +, so it
first gets multiplied with 3*2 and then adds into 7.
Here, operators with the highest
precedence appear at the top of the table, those with the lowest appear at the
bottom. Within an expression, higher precedence operators will be evaluated
first.
Category

Operator

Associativity

Postfix

() [] > . ++  

Left to right

Unary

+  ! ~ ++   (type)* &
sizeof

Right to left

Multiplicative

* / %

Left to right

Additive

+ 

Left to right

Shift

<< >>

Left to right

Relational

< <= > >=

Left to right

Equality

== !=

Left to right

Bitwise AND

&

Left to right

Bitwise XOR

^

Left to right

Bitwise OR



Left to right

Logical AND

&&

Left to right

Logical OR



Left to right

Conditional

?:

Right to left

Assignment

= += = *= /= %=>>=
<<= &= ^= =

Right to left

Comma

,

Left to right

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