The conditional looping statement repeat has the form:

repeat

     block

until exp

Note that exp comes after block in contrast to the while loop format.  For example:

      > i = 3

The following has to be on a single line if typed in the command window; here it’s separated for clarity:

      repeat

      print(i,"\n")

      i = i-1

      until i==0

      3

      2

      1

Like the while statement we can exit a repeat loop using a break statement:

      > i = 1

The following has to be on a single line if typed in the command window; here it’s separated for clarity:

      > repeat

print(i,"\n")

i = i+1

if i>3 then break end

until (i == 10)

1

2

3