Lua初识（4）_判断语句

lua中的判读语句
三个关键字 if,else， elseif， end

判读语句的三种格式：

一、、
if 表达式 then
 语句块
 end
 
二、
if 表达式 then
	语句块1
	else
   语句块2
end

三、只能有一个if和else
if 表达式1 then
  语句块1
elseif 表达式2 then
语句块2
elseif 表达式3 then
语句块3
。。。
else
	语句块N
end

For example One:

function ceshi(num)
	if(num == "hello") then
		print("hello")
	else
		print("num:"__num)
	end
end
a = "lala"
ceshi(a)

For example Two:

local today = 1
if today == 1 then
	print(“Today is Monday!”)
elseif today == 2 then
	print(“Today is Tuesday！”)
elseif today == 3 then
	print(“Today is Wednesday!”)
elseif today == 4 then
	print(“Today is Thursday!”)
elseif today == 5 then
	print(“Today is Saturday!”)
elseif today == 6 or today == 7 then
	print(“Rest!”)
else
	print(“None!”)
end