Nested Loops in Lua

Lua Loops

Lua programming language allows nesting of loops within loops. The following example demonstrates the application of nested loops in Lua.

Syntax

The syntax for nested for loops in Lua programming language is:

for init, max/min value, increment
do
   for init, max/min value, increment
   do
      statements
   end
   statements
end

The syntax for nested while loops in Lua programming language is:

while(condition)
do
   while(condition)
   do
      statements
   end
   statements
end

The syntax for nested repeat...until loops in Lua programming language is:

repeat
   statements
   repeat
      statements
   until(condition)
until(condition)

In addition to nesting loops of the same type, we can also nest different types of loops, such as a while loop inside a for loop.

Example

The following example uses nested for loops:

Example

j = 2
for i = 2, 10 do
   for j = 2, (i / j), 2 do
      if(not(i % j)) 
      then
         break 
      end
      if(j > (i / j)) then
         print("Value of i is:", i)
      end
   end
end

The output of the above code is:

Value of i is: 8
Value of i is: 9
Value of i is: 10

Lua Loops