[Note] the priority of the C Operator is prone to errors.

[Note] the priority of the C Operator is prone to errors.
C Operator priority! The names or meanings of priority operators are used in combination with directions. 1 [] array subscript array Names [constant expressions] Left to right () parentheses (expressions)/function names (parameter tables ). member selection (object) object. member name-> member selection (pointer) object pointer-> member name 2-negative sign operator-expression right to left single object operator (type) Forced type conversion (data type) expression ++ auto-increment operator ++ variable name/variable name ++ single object operator -- auto-subtraction operator -- variable name/variable name -- single object operator * value operator * pointer variable single object operator & get address operator & variable name single object Operator! Logical non-Operator! Single Object operator of expression ~ Bitwise inversion operator ~ Expression single object operator sizeof length operator sizeof (expression) 3/division expression/expression left-to-right binocular operator * multiplication expression * expression binocular operator % remainder (Modulo) integer expression/Integer expression binocular Operator 4 + addition expression + expression left-right binocular operator-subtraction expression-expression binocular operator 5 <left shift variable <expression left-right binocular operator> right shift variable> Expression binocular operator 6> greater than expression> Expression left to right binocular operator> = greater than or equal to expression> = expression binocular operator <less than expression <expression binocular operator <= less than or equal to expression <= expression binary operator 7 = equals expression = expression left to right binary operator! = Not equal to the expression! = Expression binocular operator 8 & bitwise and expression & Expression left-right binocular operator 9 ^ bitwise OR expression ^ expression left-right binocular operator 10 | bitwise OR expression | expression left-right binocular operator 10 operator 11 & logic and Expression & Expression left-to-right binary operator 12 | logic or expression | expression left-to-right binary operator 13?: Conditional operator expression 1? Expression 2: expression 3 Right to left three orders Operator 14 = assign value operator variable = expression right to left/= assign value variable after Division/= expression * = assign value variable after multiplication * = expression % = after modulo operation assign variable % = expression + = add variable + = expression-= assign variable after subtraction-= expression <= assign variable after left shift <= expression> = assign value after right shift variable >>= Expression & = bitwise AND postpaid variable & = expression ^ = bitwise OR postpaid variable ^ = expression | = bitwise OR postpaid variable | = expression 15, comma operator expression, expression ,... Operations from left to right: for operators with the same priority, the operation order is determined by the combination direction. For some error-prone priority problems, If the operators with the same priority as 1 appear at the same time, how can we determine the priority of an expression? This is a confusing place for beginners. The following table sorts out the error-prone situations: wKioL1Y-7SWC2rc4AAJHHolg3W4790.jpg priority phrase brace member 1; brace operator [] () member operator. -> all single object and second object; all single object operators, such as ++ -- + (positive)-(negative) pointer operations * & multiplication and division of three, plus and minus four; this "remainder" refers to the remainder operation, that is, % shift 5, relation 6; Shift Operator: <>>, relation: ><>=and so on (and) wait for the seventh row; that is, =! = Bitwise AND exclusive or bitwise OR; these operations are bitwise operations: bitwise AND (&) exclusive or (^) bitwise OR (|) "three minutes in the world" 80 or 90; logic or heel; logical operators: | and & 12 and 11; Note the sequence: Priority (|) is higher than the value assignment based on the priority (&) condition, the priority of the Three-object operator is 13 BITs, which is only equal to the value assignment operator and "," the highest level of comma is the lowest! Lowest comma operator priority