--{First Entry}-

--{Variables}--

local a = 2 
local b = 3 
local c = 4 
local d = 5 

--{Functions}--

local function FavoriteFunction()
  local a = 2 
  local b = 3
  local c = 4
  print(a+b-c)
  return "One - Integer"
end

local function CoolFunction()
  local b = 3
  local d = 5
  print(d-b)
  return "Two - Integer"
end

local function EpicFunction()
  local a = 2
  local d = 5
  print(d-a)
  return "Three - Integer"
end  
  
local function BestFunction()
  local a = 1
  local b = 3
  print(a+b)
  return "Four - Integer"
end

local function AmazingFunction()
  local a = d-2 
  local b = 2
  print(a+b)
  return "Five - Integer"
end

local function MagnificentFunction()
  local a = 1 
  local b = 5 
  print(a+b)
  return "Six - Integer"
end

local function RadicalFunction()
  local c = 4
  local a = 3
  print(c+a)
  return "Seven - Integer"
end

local function EasiestFunction()
  local d = 4
  local b = 2 
  print(4*2)
  return "Eight - Integer"
end

local function ThatOneFunction()
  local a = 3
  local b = 2
  print(a^b)
  return "Nine - Float"
end

local function LastFunction()
  local a = 3.16227766 
  local d = 3.16227766
  local b = 0.0000000010649
  print(a*d+b)
  return "Ten - Float"
end

--{Returning}--

local Favorite = FavoriteFunction()
print(Favorite)

local Cool = CoolFunction()
print(Cool)

local Epic = EpicFunction()
print(Epic)

local Best = BestFunction()
print(Best)

local Amazing = AmazingFunction()
print(Amazing)

local Magnificent = MagnificentFunction()
print(Magnificent)

local Radical = RadicalFunction()
print(Radical)

local Easiest = EasiestFunction()
print(Easiest)

local ThatOne = ThatOneFunction()
print(ThatOne)

local Last = LastFunction()
print(Last)

--{Second Entry}--

--{Variables}--

local TableOne = {"PartOne", "PartTwo", "PartThree", "PartFour"}
local FavoriteNumbers = {7, 3, 21, 13, 36}
local Dice = math.random(1, 6)
local MegaDice = math.random(1, 20)
local SuperDice = math.random(1, 200)

--{Ipairs and tables}--

table.sort(FavoriteNumbers)
table.remove(FavoriteNumbers, 2)

for i, v in ipairs(TableOne) do
  print(i, "=", v)
end

for i, v in ipairs(FavoriteNumbers) do
  print("Favorite number", i, v)
end

--{RNG, functions, and returning}--

print(Dice)
print(MegaDice)
print(SuperDice)

local function DiceFunction()
  if Dice == 3 then
    print("Dice is equal to 3.")
  else
    print("Dice is not equal to 3.")
  return("Dice Function Called")
    end
end

local function MegaDiceFunction()
  if MegaDice == 10 then
    print("Dice is equal to 10.")
  else
    print("Dice is not equal to 10.")
  return("Mega Dice Function Called")
    end
end

local function SuperDiceFunction()
  if SuperDice == 100 then
    print("Dice is equal to 100.")
  else
    print("Dice is not equal to 100.")
  return("Super Dice Function Called")
    end
end

local Dicer = DiceFunction()
  print(Dicer)
  
local MegaDicer = MegaDiceFunction()
  print(MegaDicer)

local SuperDicer = SuperDiceFunction()
 print(SuperDicer)

--{Randomseed}--

math.randomseed(os.time())
for i = 1, 5 do
  print(math.random(1, 5))
end
  
math.randomseed(os.time())
for i = 1, 5 do
  print(math.random(1, 50))
end

math.randomseed(os.time())
for i = 1, 5 do
  print(math.random(1, 500))
end

--{While do loops}--

local function TrueFunction()
  local TrueVariable = 1 
  if (TrueVariable < 10) then
    while TrueVariable < 10 do 
      print("WhileDoLoop")
      TrueVariable = TrueVariable + 1
    end
  end
end

TrueFunction() 
by

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About Lua

Lua is a light weight embeddable scripting language which is built on top of C. It is used in almost all kind of applications like games, web applications, mobile applications, image processing etc. It's a very powerful, fast, easy to learn, open-source scripting language.

Syntax help

Variables

  • By default all the variables declared are global variables
  • If the variables are explicitly mentioned as local then they are local variables.
  • Lua is a dynamically typed language and hence only the values will have types not the variables.

Examples

-- global variables
a = 10

-- local variables

local x = 30
Value TypeDescription
numberRepresents numbers
stringRepresents text
nilDifferentiates values whether it has data or not
booleanValue can be either true or false
functionRepresents a sub-routine
userdataRepresents arbitary C data
threadRepresents independent threads of execution.
tableCan hold any value except nil

Loops

1. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition)
do
--code
end

2. Repeat-Until:

Repeat-Until is also used to iterate a set of statements based on a condition. It is very similar to Do-While, it is mostly used when you need to execute the statements atleast once.

repeat
   --code
until( condition )

3. For:

For loop is used to iterate a set of statements based on a condition.

for init,max/min value, increment
do
   --code
end

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increase re-usuability and modularity.

optional_function_scope function function_name( argument1, argument2, argument3........, argumentn)
--code
return params with comma seperated
end