運(yùn)算符	描述	示例
and	所謂邏輯與運(yùn)算符。如果兩個(gè)操作數(shù)都是不為零，則條件成立。	(A and B) 為 false.
or	調(diào)用邏輯OR運(yùn)算符。如果有兩個(gè)操作數(shù)是不為零，則條件變?yōu)檎妗?/td>	(A or B) 為 true.
not	所謂邏輯非運(yùn)算符。用于反轉(zhuǎn)操作數(shù)的邏輯狀態(tài)。如果一個(gè)條件為真，則邏輯非運(yùn)算符將返回false。	!(A and B) 為 true.

示例

試試下面的例子就明白了所有的Lua編程語言提供的邏輯運(yùn)算符：

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

當(dāng)建立并執(zhí)行上面的程序它會(huì)產(chǎn)生以下結(jié)果：

Line 1 - Condition is true
Line 2 - Condition is true
Line 3 - Condition is true
Line 3 - Condition is not true

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Lua邏輯運(yùn)算符

示例