FizzBuzz
lumen --examples fizzbuzz
print('N=')
x = inputInt()
repeat x, n
n = n + 1
if n % 15 == 0
println('FizzBuzz')
elif n % 5 == 0
println('Buzz')
elif n % 3 == 0
println('Fizz')
else
println(n)
endif
endrepeat
repeat x, n runs the body x times and stores the iteration number (0, 1, 2, …) in n; the body then rewrites n as n + 1 so the printed numbers start at 1. The if / elif / else chain tests divisibility with %.
Touches: loops, conditionals, operators.