Lua - 运算符优先级

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  简述

  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。
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  例子

  尝试以下示例以了解 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