Pengge C language lesson 4 (3)

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 .