Lua by Example: If/Else

Branching with if and else in Lua:

Here’s a basic example. Note that you don’t need parentheses around conditions

 
if 7 % 2 == 0 then
    print("7 is even")
else
    print("7 is odd")
end

You can have an if statement without an else.

 
if 8 % 4 == 0 then
    print("8 is divisible by 4")
end

And an elseif example

 
local num = 9
if num < 0 then
    print(num, "is negative")
elseif num < 10 then
    print(num, "has 1 digit")
else
    print(num, "has multiple digits")
end
 
$ lua if-else.lua
7 is odd
8 is divisible by 4
9    has 1 digit

Next example: Functions.

by Blake Bourque | source | license