Lua - 算术运算符

简述

下表显示了Lua语言支持的所有算术运算符。假设变量A 容纳 10 和变量 B 持有 20，然后 -

操作符	描述	例子
+	添加两个操作数	A + B 等于 30
-	从第一个操作数中减去第二个操作数	A - B 会等于 -10
*	将两个操作数相乘	A * B 等于 200
/	分子除以分数	B/A 会等于 2
%	模运算符和整数除法后的余数	B % A 会等于 0
^	指数运算符取指数	A^2 会等于 100
-	一元 - 运算符充当否定	-A 会等于 -10

例子

尝试以下示例以了解 Lua 编程语言中可用的所有算术运算符 -


a = 21
b = 10
c = a + b
print("Line 1 - Value of c is ", c )
c = a - b
print("Line 2 - Value of c is ", c )
c = a * b
print("Line 3 - Value of c is ", c )
c = a / b
print("Line 4 - Value of c is ", c )
c = a % b
print("Line 5 - Value of c is ", c )
c = a^2
print("Line 6 - Value of c is ", c )
c = -a
print("Line 7 - Value of c is ", c )

当您执行上述程序时，它会产生以下结果 -


Line 1 - Value of c is  31
Line 2 - Value of c is  11
Line 3 - Value of c is  210
Line 4 - Value of c is  2.1
Line 5 - Value of c is  1
Line 6 - Value of c is  441
Line 7 - Value of c is  -21