Fibonacci numbers in Smalltalk

Example for versions gst 3.1

This example uses iterative definition of Fibonacci numbers,. 

a1 := 0.
a2 := 1.
0 to: 15 do: [ :i |
  a2 display.
  t := a1 + a2.
  a1 := a2.
  a2 := t.
  ', ' display
]
'...' displayNl.