! CPL plotting primitives are mapped to gnuplot commands
! ======================================================

USE gnuplot
INTEGER n
ASK "How many? ":n  ! ask the console user
REAL Fib(0..n)      ! variable dimensions are allowed
Fib(0)=0; Fib(1)=1  ! initialize recursion
LOOP FOR i=2 TO n   ! fill up array of Fibonacci values
  Fib(i)=Fib(i-1)+Fib(i-2)
REPEAT LOOP
PLOT Fib            ! plot the array against its index.
READ ! keep plot displayed until Enter is pressed