Lua運算符優先級

運算符優先級來確定條件的表達式中的分組。這會影響一個表達式如何計算。某些運算符的優先級高於其他。

例子

試試下面的例子就明白了在Lua編程語言的運算符所有的優先級：

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 )

當建立並執行上面的程序它會產生以下結果：

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