If/Else Statements

Control flow in Lua starts with the if statement. You can use if, elseif, and else for conditional branching:

score = 85

if score >= 90 then
  print("Excellent")
elseif score >= 75 then
  print("Good")
else
  print("Keep improving")
end

Note:

• Conditions don’t require parentheses.
• The end keyword is required to close each if block.

Truthiness:

Only false and nil are treated as false. Everything else is true, including 0 and "".