0 Hierarchy and Associativity of operators

The priority or precedence in which the operations in an arithmetic statement are performed is called the hierarchy of operations. And when an expression contains two operators of equal priority the tie between them is settled using the associativity of operators.

This page lists C operators in order of precedence (highest to lowest). Their associativity indicates in what order operators of equal precedence in an expression are applied.

Operator	Description	Associativity
() [] . -> ++  --	Parentheses (function call) (see Note 1) Brackets (array subscript) Member selection via object name Member selection via pointer Postfix increment/decrement (see Note 2)	left-to-right
++  -- +  - !  ~ (type) * & sizeof	Prefix increment/decrement Unary plus/minus Logical negation/bitwise complement Cast (change type) Dereference Address Determine size in bytes	right-to-left
*  /  %	Multiplication/division/modulus	left-to-right
+  -	Addition/subtraction	left-to-right
<<  >>	Bitwise shift left, Bitwise shift right	left-to-right
<  <= >  >=	Relational less than/less than or equal to Relational greater than/greater than or equal to	left-to-right
==  !=	Relational is equal to/is not equal to	left-to-right
&	Bitwise AND	left-to-right
^	Bitwise exclusive OR	left-to-right
|	Bitwise inclusive OR	left-to-right
&&	Logical AND	left-to-right
||	Logical OR	left-to-right
?:	Ternary conditional	right-to-left
= +=  -= *=  /= %=  &= ^=  |= <<=  >>=	Assignment Addition/subtraction assignment Multiplication/division assignment Modulus/bitwise AND assignment Bitwise exclusive/inclusive OR assignment Bitwise shift left/right assignment	right-to-left
,	Comma (separate expressions)	left-to-right