C语言运算符优先级

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C语言运算符优先级 Precedence Operator Description Associativity 1 ++ -- Suffix/postfix increment and decrement Left-to-right () Function call [] Array subscripting . Structure and union member access −> Structure and union member access through pointer ( type ){ list } Compound literal (C99) 2 ++ -- Prefix increment and decrement Right-to-left + − Unary plus and minus ! ~ Logical NOT and bitwise NOT ( type ) Type cast * Indirection (dereference) & Address-of sizeof Size-of _Alignof Alignment requirement (C11) 3 * / % Multiplication, division, and remainder Left-to-right 4 + − Addition and subtraction 5 << >> Bitwise left shift and right shift 6 < <= For relational operators < and ≤ respectively > >= For relational operators > and ≥ respectively 7 == != For relational = and ≠ respectively 8 & Bitwise AND 9 ^ Bitwise XOR (exclusive or) 10 | Bitwise OR (inclusive or) 11 && Logical AND 12 || Logical OR 13 ?: Ternary conditional Right-to-Left 14 = Simple assignment += −= 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 OR 15 , Comma Left-to-right

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