C language Arithmetic Operators and arithmetic expressions

1. Introduction to operators
<1> Arithmetic Operators: +,-, *,/, % (remainder or modulo operation), ++, and -- seven Arithmetic Operators
<2> Relational operators: >,<, ==, >=, <=, and ,! = Six Relational operators
<3> logical operators: &, |, and ,! Three Types
<4> bitwise operation OPERATOR: the amount involved in the operation. bitwise AND (&), bitwise OR (|), bitwise non (~) , Bitwise exclusive or (^), left shift (<), right shift (>)
<5> value assignment operator: =, compound arithmetic value assignment (+ =,-=, * =,/=, % =), and compound bitwise operation value assignment (& = ,...) 11 types in three categories
<6> conditional operators: Three-object operators (? :)
<7> comma OPERATOR: Used to combine several expressions into one expression (,)
<8> pointer OPERATOR: used for content (*) and address (&) Operations
<9> Number of nodes OPERATOR: used to calculate the number of bytes occupied by the Data Type (sizeof)
<10> Special operators: (), subscripts [], members (->,.), and so on
2,
<1> operator priority: the operator priority is divided into 15 levels. Highest Level 1, lowest level 15
<2> operator combination:
A: From left to right
B: from right to left
<3> forced type conversion OPERATOR: (type specifier) (expression)
<4> auto-increment and auto-subtraction Operators
A: ++ I auto-increment 1 before other operations
B: -- I minus 1 before other operations
After c: I ++ I is involved in the operation, the value of I increases by 1.
D: After I -- I is involved in the operation, the value of I is reduced by 1.
3. Basic Type Classification features
Character char 1 (byte) c character set (value range)
Basic integer int 2-32768 ~ 32767
Short integer short int 2...
Long Integer long int 4-214783648 ~ 214783647
Unsigned 2 0 ~ 65535
Unsigned long 4 0 ~ 4294967295
Single precision float 4 3/4E-38 ~ 3/4E + 38
Double 8 1/7E-308 ~ 1/7 e + 308
4. Constant suffix
L or l long integer
Unsigned number of u or u
F or f floating point type
5. Constant type
Integer, long integer, unsigned number, floating point number, character, String, symbol constant, Escape Character