这篇文章主要介绍了Lua中关系运算符的使用教程,是Lua学习入门中的基础知识,需要的朋友可以参考下

　　下表列出了所有的Lua语言支持的关系运算符。假设变量A持有10和变量B持有20则：

　　示例

　　试试下面的例子就明白了所有的Lua编程语言提供的关系运算符：

　　代码如下:

　　a = 21

　　b = 10

　　if( a == b )

　　then

　　print("Line 1 - a is equal to b" )

　　else

　　print("Line 1 - a is not equal to b" )

　　end

　　if( a ~= b )

　　then

　　print("Line 2 - a is not equal to b" )

　　else

　　print("Line 2 - a is equal to b" )

　　end

　　if ( a < b )

　　then

　　print("Line 3 - a is less than b" )

　　else

　　print("Line 3 - a is not less than b" )

　　end

　　if ( a > b )

　　then

　　print("Line 4 - a is greater than b" )

　　else

　　print("Line 5 - a is not greater than b" )

　　end

　　-- Lets change value of a and b

　　a = 5

　　b = 20

　　if ( a <= b )

　　then

　　print("Line 5 - a is either less than or equal to b" )

　　end

　　if ( b >= a )

　　then

　　print("Line 6 - b is either greater than or equal to b" )

　　end

　　当建立并执行上面的程序它会产生以下结果：

　　代码如下:

　　Line 1 - a is not equal to b

　　Line 2 - a is not equal to b

　　Line 3 - a is not less than b

　　Line 4 - a is greater than b

　　Line 5 - a is either less than or equal to b

　　Line 6 - b is either greater than or equal to b