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相关资料：C++ Operator Precedence

PrecedenceOperatorDescriptionAssociativity1::Scope resolutionLeft-to-right2++   --Suffix/postfix increment and decrementtype()type{}Function-style type cast()Function call[]Array subscripting.Element selection by reference->Element selection through pointer3++   --Prefix increment and decrementRight-to-left+   -Unary plus and minus!   ~Logical NOT and bitwise NOT(type)C-style type cast*Indirection (dereference)&Address-ofsizeofSize-of^{[note 1]}new, new[]Dynamic memory allocationdelete, delete[]Dynamic memory deallocation4.*   ->*Pointer to memberLeft-to-right5*   /   %Multiplication, division, and remainder6+   -Addition and subtraction7<<   >>Bitwise left shift and right shift8<   <=For relational operators < and ≤ respectively>   >=For relational operators > and ≥ respectively9==   !=For relational = and ≠ respectively10&Bitwise AND11^Bitwise XOR (exclusive or)12|Bitwise OR (inclusive or)13&&Logical AND14||Logical OR15?:Ternary conditional^{[note 2]}Right-to-left=Direct assignment (provided by default for C++ classes)+=   -=Assignment by sum and difference*=   /=   %=Assignment by product, quotient, and remainder<<=   >>=Assignment by bitwise left shift and right shift&=   ^=   |=Assignment by bitwise AND, XOR, and OR16throwThrow operator (for exceptions)17,CommaLeft-to-right