4.10. Lua loop nesting

Lua loop is allowed to be embedded in a loop in a programming language. The following example demonstrates Lua application of loop nesting.

4.10.1. Grammar #

In the Lua programming language for loop nested syntax format:

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

In the Lua programming language while loop nested syntax format:

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

In the Lua programming language repeat...until loop nested syntax format:

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

In addition to the same type of loop nesting above, we can also use different loop types to nest, such as for nesting in the loop body while cycle.

4.10.2. Example #

The following example uses the for loop nesting:

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("The value of i is：",i)
      end
   end
end

The result of the above code execution is:

The value of i is: 8
The value of i is: 9
The value of i is: 10