Flow control structures

Some classic control structures are implemented in Lua, such as the if-then conditional statements, a few different loop types, and the break and continue functions. Let's review those structures briefly.

Conditional statements – if, then, elseif

The if-then conditional statement evaluates an expression and executes a block of code if true:

if status.body then
--Do something end

Lua also supports an elseif conditional statement with the elseif keyword:

if status.body then
--Do something elseif
--Do something else end

Important note

if-then statements must end with the terminator keyword, end.

Loops – while

The while loop works similarly as in other programming languages:

local x = 1 while(x<1337)
print x
x = x + 1 end

Important Note

while loops must end with the terminator keyword, end.

Loops – repeat

The repeat loop runs the body until the set condition becomes true:

done = false repeat...