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Pengge C language lesson 4 (3)

2022-07-26 10:43:00 【ZhuMou】

One . The operator

Binocular operator effect
+,-,*,/,% Addition, subtraction, multiplication, division and remainder
= assignment
+=,-=,*=,/=,%= Compound assignment
<<,>> Move left 1 position , Move right 1 position
&,|,^ Bitwise AND , Press bit or , Bitwise XOR
==,<,>,<=,>=,!= Relational operator

Monocular operators effect
++ Self increasing
-- Self reduction
! Logic reverses
sizeof() Calculated variables （ Including arrays ）/ Memory size occupied by type （ byte ）
- Take the negative
& Address fetch
~ According to the not
* Indirect access operators
+ Correct
(datatype)  Cast cast character

For operators , There are several important points ：

1. Operands

2. Combining order

3. priority

4. Some operators do not change the value of the operand , And some will change （ Such as ++,--）. The expression formed by operator and operand has its value , And this value is often what we need .

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