lua 入门学习

-- 1.Hello world

print( "--------------1--------------")

print("Hello world");

-- 2. function define

function add(a,b)

    return a + b

end

print( "--------------2--------------")

print( "enter a number:" )

n = io.read("*number")

m = io.read("*number")

print( add(m,n) )

-- 3. lua 的数据类型

print( "--------------3--------------")

print(type("Hello world"))

print(type())

print(type(add))

print(type(false))

print(type(nil))

-- 4. 数字, 字符串操作

print( "--------------4--------------")

print( "" +  + )

print( "" ..  .. )

str = "Hello world"

print( "\"".. str .. "\" length: = " .. #str)

-- 5. table 关联数组

print( "--------------5--------------")

tab1 = {}

tab1["day"] =

days = "days"

tab1[days] = tab1.day +

print(tab1.day)

print(tab1.days)

-- 用table来实现线性表

array = {};

for i =  ,  do

    array[i] = i.. " word"

end

for i = , #array do

    print(array[i])

end

-- table大小

print ("the array size: " .. #array)    --> the array size: 10

--6. 函数式编程

p = add

print( p(, ))      --> function programming