Lua - Nested if statements

It is always legal in Lua programming to nest if-else statements, which means you can use one if or else if statement inside another if or else if statement(s).

Syntax

The syntax for a nested if statement is as follows −

if( boolean_expression 1)
then
   --[ Executes when the boolean expression 1 is true --]
   if(boolean_expression 2)
   then
      --[ Executes when the boolean expression 2 is true --]
   end
end

You can nest else if...else in the similar way as you have nested if statement.

Example

--[ local variable definition --]
a = 100;
b = 200;

--[ check the boolean condition --]

if( a == 100 )
then
   --[ if condition is true then check the following --]
   if( b == 200 )
   then
      --[ if condition is true then print the following --]
      print("Value of a is 100 and b is 200" );
   end
end

print("Exact value of a is :", a );
print("Exact value of b is :", b );

When you build and run the above code, it produces the following result.

Value of a is 100 and b is 200
Exact value of a is :	100
Exact value of b is :	200