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Lua if Statement

Lua Flow Control

Lua if statement consists of a boolean expression followed by other statements.

Lua if statement syntax is as follows:

if( boolean_expression )
then
   --[ statement(s) to execute if boolean expression is true --]
end

If the boolean expression evaluates to true, the code block inside the if statement will be executed. If it evaluates to false, the code immediately following the if statement's end will be executed.

Lua considers false and nil as false, and true and non-nil as true. Note that in Lua, 0 is considered true.

The flowchart for the if statement is as follows:

Lua if Statement

Example

The following example checks if the value of variable a is less than 20:

Example

--
a = 10;

--
if( a < 20)
then
   --
   print("a is less than 20");
end
print("a's value is:", a);

The result of executing the above code is as follows:

a is less than 20
a's value is:	10

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If Statement In Lua

Lua if Statement |

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Lua if Statement

Lua if statement syntax is as follows:

Example

Example

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