1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
set n 50 set previous 0 set fib 1 op add end n 1 set i 2 loop: jump ret greaterThanEq i end op add tmp previous fib set previous fib set fib tmp op add i i 1 jump loop always ret: print fib stop