Lua中的逻辑运算符使用详解

下表列出了所有的Lua语言支持的逻辑运算符。假设变量A持有true，而变量B持有false：

 示例

试试下面的例子就明白了所有的Lua编程语言提供的逻辑运算符：

复制代码 代码如下:a = 5
b = 20

if ( a and b )
then
   print("Line 1 - Condition is true" )
end

if ( a or b )
then
   print("Line 2 - Condition is true" )
end

--lets change the value ofa and b
a = 0
b = 10

if ( a and b )
then
   print("Line 3 - Condition is true" )
else
   print("Line 3 - Condition is not true" )
end

if ( not( a and b) )
then
   print("Line 4 - Condition is true" )
else
   print("Line 3 - Condition is not true" )
end

当建立并执行上面的程序它会产生以下结果：

复制代码 代码如下:Line 1 - Condition is true
Line 2 - Condition is true
Line 3 - Condition is true
Line 3 - Condition is not true