The precedence of operator species that which operator will be evaluated first and next. The associativity specifies the operator direction to be evaluated; it may be left to right or right to left.
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