Lua - 运算符优先级
运算符优先级确定表达式中术语的分组。 这会影响表达式的计算方式。 某些运算符的优先级高于其他运算符。
示例
试试下面的例子来理解 Lua 编程语言中运算符的所有优先级−
a = 20
b = 10
c = 15
d = 5
e = (a + b) * c / d;-- ( 30 * 15 ) / 5
print("Value of (a + b) * c / d is :",e )
e = ((a + b) * c) / d; -- (30 * 15 ) / 5
print("Value of ((a + b) * c) / d is :",e )
e = (a + b) * (c / d);-- (30) * (15/5)
print("Value of (a + b) * (c / d) is :",e )
e = a + (b * c) / d; -- 20 + (150/5)
print("Value of a + (b * c) / d is :",e )
当您构建并执行上述程序时，它会产生以下结果 −
Value of (a + b) * c / d is : 90 Value of ((a + b) * c) / d is : 90 Value of (a + b) * (c / d) is : 90 Value of a + (b * c) / d is : 50
