untitled-1.md

description	夫未戰而廟算勝者，得算多也；未戰而廟算不勝者，得算少也。多算勝，少算不勝，而況於無算乎？【始計篇】

2.2 Operators

「運算子就是把兩個運算元連接在一起的東西」by 03t

「表示我們要做事的東西」by Sean

Arithmetic Operators

Operator	Description	Example
+	a 加 b	3 + 2
-	a 減 b	3 - 2
*	a 乘 b	3 * 2
/	b 除 a	3 / 2
%	a 模 b	3 % 2
**	a 的 b 次方	3 ** 2
//	b 除 a 的商	3 // 2

Comparison Operators

Operator	Description	Example
==	等於	3 == 5
!=	不等於	3 != 5
>	大於	3 > 5
<	小於	3 < 5
>=	不小於	3 >= 5
<=	不大於	3 <= 5

Logical Operators

Operator	Description	Example
and	且	3 >= 2 and 3 < 6
or	或	3 < 2 or 3 > 1
not	否	not a == b

Assignment Operators

Operator	Example	Same as
=	x = 1	x = 1
+=	x += 1	x = x + 1
-=	x -= 1	x = x - 1
*=	x *= 2	x = x * 2
/=	x /= 2	x = x / 2
%=	x %= 2	x = x % 2
**=	x **= 2	x = x ** 2
//=	x //= 2	x = x // 2

📎 Bitwise Operators

Operator	Name	Example
&	AND	3 & 5
|	OR	`3
^	XOR	3 ^ 5
~	NOT	~0
<<	Zero fill left shift	3 << 1
>>	Signed right shift	3 >> 1