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Priority and Assiciativity of C's operators

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• Table of priority and associativity of C's operators
  • Priority and Associativity of the operators of C:

    Operators	Associativity
    ( )   [ ]   . (member)   -> (pointer member)   ++ (post)   -- (post)	left to right
    (Unary) +   (Unary) -   !   ~   ++ (pre)   -- (pre)   & (referenec)   * (de-reference)   (typecast)   sizeof(..)	right to left
    *   /   %	left to right
    +   -	left to right
    >>   <<	left to right
    <   <=   >   >=	left to right
    ==   !=	left to right
    &	left to right
    ^	left to right
    |	left to right
    &&	left to right
    ||	left to right
    ?:	right to left
    =   +=   -=   *=   /=   %=   >>=   <<=   &=   ^=   |=	right to left
    ,	left to right

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• Advice
  • I don't memorize the exact order

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  • I do memorize the most commonly used combinations:

    Relative priorities of arithmetic operators: Unary operation always first:   +   -          *   /   %        +   - Relative priorities of compare and logic operators: Unary operation always first: ! Compare operations first: <   <=   >   >=                                                   ==   != And is like multiply:          && Or is like add:                   || The assignment operators have the lowest priotity (I don't use the comma operator much - except in the for-statement to initailize multiple variables) I use brackets in cases where I am not certain which operator has a higher priority...